Re: Stus-List Overheating yanmar 3gm30

[Dennis C. via CnC-List]

I have no idea.  I use the orange stuff.
  --
Dennis C.
Touche' 35-1 #83
Mandeville, LA

On Thu, Aug 27, 2020 at 3:30 PM Ronald B. Frerker via CnC-List <
cnc-list@cnc-list.com> wrote:

> Dennis, is that any better than the ethylene gylcol standard, or the same
> but more environmentally friendly?
> Ron
> Wild Cheri
> C 30-1
> STL
>
> On Thursday, August 27, 2020, 02:56:18 PM CDT, Dennis C. via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>
> *OAT* coolant is pink.  OAT is an acronym for Organic Acid (Additive)
> Technology which describes the type of materials responsible for the
> corrosion protection offered by a *coolant* of this type.  It's still a
> marine and automotive coolant.
> --
> Dennis C.
> Touche' 35-1 #83
> Mandeville, LA
>
>
>
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
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Re: Stus-List Overheating yanmar 3gm30

[Josh Muckley via CnC-List]

Better?  Maybe/maybe not.
http://knowhow.napaonline.com/what-is-hoat-coolant-4-things-you-need-to-know/

Ethylene glycol isn't actually bad for the environment.  It readily breaks
down and degrades.  It's just toxic to aminals should they ingest it.  On
the other hand, many other coolants may not be toxic to animals but they
don't biodegrade.  Propylene glycol is one of them IIRC.  I had been the
type to try for the latest and greatest products but when I learned that
ethylene glyco is arguably less impactful to the environment I switched
back.  It's more common and cheaper too.

"Ethylene glycol does not persist in large amounts in ambient air because
breakdown is rapid (half-life in air is 8-84 hours). In environmental
exposure situations, its low vapor pressure precludes substantial
inhalation exposure at ambient temperatures, and its poor skin absorption
prevents significant absorption after dermal contact. Ethylene glycol is
miscible with water and will leach through soil to groundwater. It
biodegrades rapidly in soil (half-life, 2-12 days). The half-life ranges
from 2-12 days in surface water and 4- 24 days in ground water. Because it
is not fat soluble and biodegrades rapidly, bioconcentration and
bioaccumulation are insignificant (Agency for Toxic Substances and Disease
Registry 1997"

Do your own research by Google searching or pulling the SDS on your coolant
of choice.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Thu, Aug 27, 2020, 16:30 Ronald B. Frerker via CnC-List <
cnc-list@cnc-list.com> wrote:

> Dennis, is that any better than the ethylene gylcol standard, or the same
> but more environmentally friendly?
> Ron
> Wild Cheri
> C 30-1
> STL
>
> On Thursday, August 27, 2020, 02:56:18 PM CDT, Dennis C. via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>
> *OAT* coolant is pink.  OAT is an acronym for Organic Acid (Additive)
> Technology which describes the type of materials responsible for the
> corrosion protection offered by a *coolant* of this type.  It's still a
> marine and automotive coolant.
> --
> Dennis C.
> Touche' 35-1 #83
> Mandeville, LA
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --  https://www.paypal.me/stumurray
>
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --   https://www.paypal.me/stumurray
>
>
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Overheating yanmar 3gm30

[Ronald B. Frerker via CnC-List]

 Dennis, is that any better than the ethylene gylcol standard, or the same but 
more environmentally friendly?
Ron
Wild Cheri
C 30-1
STL

 On Thursday, August 27, 2020, 02:56:18 PM CDT, Dennis C. via CnC-List 
 wrote:  
 
 OAT coolant is pink.  OAT is an acronym for Organic Acid (Additive) Technology 
which describes the type of materials responsible for the corrosion protection 
offered by a coolant of this type.  It's still a marine and automotive coolant.
-- 
Dennis C.Touche' 35-1 #83Mandeville, 
LA___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --  https://www.paypal.me/stumurray

  ___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Overheating yanmar 3gm30

[Dennis C. via CnC-List]

*OAT* coolant is pink.  OAT is an acronym for Organic Acid (Additive)
Technology which describes the type of materials responsible for the
corrosion protection offered by a *coolant* of this type.  It's still a
marine and automotive coolant.
-- 
Dennis C.
Touche' 35-1 #83
Mandeville, LA
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Overheating yanmar 3gm30

[Ronald B. Frerker via CnC-List]

 It was mentioned earlier, but bears repeating. Like the previous poster, I 
thought the pink stuff was for winterizing, not for engine coolant. I believe 
the pink stuff uses propylene glycol which is safe for drinking water systems.
I thought the gold standard for engine coolant is still ethylene glycol.
Ron
Wild Cheri
C 30-1
STL
  ___

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Re: Stus-List Overheating yanmar 3gm30

[Mazen Aziz via CnC-List]

Thanks everyone for the help here. Here is an update and what I did this 
morning. I took off beginning of every hose and blow in it to make sure there 
is no blockage somewhere. Then topped every hose with coolant manually. Some of 
them specially the top ones off the engine block did have bubbles coming out as 
I was pouring coolant. Anyways engine has been running now for almost half an 
hour. Temp staying around 150. And little high rpm. About 2000? Please know 
that none of the gauges work on mine. That’s the next task. So for now just 
going off sense, alarm sender(new) and I bought infrared temp gun. Fingers 
crossed it stays like that without over heating and I think I would have solved 
the problem. If so, blue smoke would be my next worry. Prob something I messed 
up during this process.

1-the coolant good stuff is that you wanna look for the pink oat premium 
coolant. Different than the winter antifreeze

2- my 3gm was adjusted to be coolant cooled. All the parts are from local shops 
unfourtanetly and doesn’t have a bleed air valve anywhere. All the hoses now 
are staying way cooler than the last few days. Even the ones after the 
thermostat, are warm not HOT.


MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz



"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid


"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali

On Aug 26, 2020, at 4:25 AM, Edd Schillay via CnC-List  
wrote:

 Mazen,

Have you checked the amount of antifreeze? Try adding a little.

When was the last time that the antifreeze system was flushed and cleaned, 
including the heat exchanger?

All the best,

Edd

———-
Edd M. Schillay
Captain of the “Starship Enterprise”
C 37+ | Sail No.: NCC-1701-B
Venice Yacht Club | Venice Island, FL
www.StarshipSailing.com
———-
914.774.9767   | Mobile
———-
Sent via iPhone 11 Pro
iPhone. iTypos. iApologize


On Aug 25, 2020, at 11:20 PM, Mazen Aziz via CnC-List  
wrote:

 Hi josh,

Yes sorry should have mentioned. Did these 2 steps as well. Thermostat is 
working fine and running the engine without the thermostat still didn’t help. 
Is that normal that the hose from the engine block to the heat exchanger is 
empty without coolant when I check it?



MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz

“To most people, the sky is the limit. To those who love aviation, the sky is 
home. “Jerry Crawford

"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid

"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali


On Aug 25, 2020, at 8:12 PM, Josh Muckley via CnC-List  
wrote:


Sounds like you may have solved your own problem.  If the one hose leading to 
the thermostat is cold and the other is hot then you should check that the 
thermostat is working.  You can remove it and test in a pot of hot water.  Or, 
you can even remove it and reassemble the engine (temporarily) without it to 
see if that solves the problem.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Tue, Aug 25, 2020, 22:55 Mazen Aziz via CnC-List 
mailto:cnc-list@cnc-list.com>> wrote:
Hi everyone,

Hope everyone is doing well and staying safe. So since I got the boat(C 35) 
2 months ago, I have been doing all the typical engine Maintinance. I never 
touched an engine before 
with absolutely no experience. Got the 
boat and started to follow 
the manual from oil 
change, filters, 
impellers etc. However, my 
engine now heats up and 
the idiot temp alarm 
comes off. I have a yanmar 3gm30 that has been modified to be coolant cooled.

My engine had unknown green 
coolant, I went ahead 
and flushed it and replaced it with the pink good stuff. While troubleshooting 
the overheat, I checked the impellers again(both new), pumps rotate with no 
problem or leak and sea 
water ofF the 
exhaust and no leakage 
anywhere. So I think it has to be the coolant circuit. Something weird is that 
the hose from the heat 
exchanger to 
the pump until the 
thermostat, stays cold. But from the thermostat to the engine block and the 
last hose from block to the heat 

Re: Stus-List Overheating yanmar 3gm30

[Doug via CnC-List]

I think you have an air lock in the system. I had a 35 III a few years ago and 
it had a stock Yanmar heat exchanger. The hose that came out of the engine just 
above the water pump and goes to the water heater had brass tee fitting that 
was fitted to the block and had a bleeder valve installed. The bleeder valve 
was the high point in the sysem. My current C has a 3 cylender Yanmar 3HM 
with the same bleeder valve set up. The shop manual talks about using this 
valve to bleed the air out of the system when the antifreeze is changed or the 
hot water heater is replaced.

 

Doug Allardyce

~~~_/) _/) ~~~

C 41

BULLET

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Matthew via 
CnC-List
Sent: Wednesday, August 26, 2020 10:00 AM
To: cnc-list@cnc-list.com
Cc: Matthew 
Subject: Re: Stus-List Overheating yanmar 3gm30

 

What’s the pink good stuff?  Around here, pink antifreeze is used for 
winterizing potable water systems.  It is not the good stuff for engines (at 
least not mine).

 

From: CnC-List mailto:cnc-list-boun...@cnc-list.com> > On Behalf Of Mazen Aziz via CnC-List
Sent: Tuesday, August 25, 2020 10:55 PM
To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> 
Cc: Mazen Aziz mailto:mazen.a...@olympian.org> >
Subject: Stus-List Overheating yanmar 3gm30

 

Hi everyone,

Hope everyone is doing well and staying safe. So since I got the boat(C 35) 
2 months ago, I have been doing all the typical engine Maintinance. I never 
touched an  <https://www.cruisersforum.com/forums/tags/engine.html> engine 
before with absolutely no experience. Got the  
<https://www.cruisersforum.com/forums/tags/boat.html> boat and started to 
follow the manual from  
<https://www.cruisersforum.com/forums/tags/oil%20change.html> oil change, 
filters, impellers etc. However, my  
<https://www.cruisersforum.com/forums/tags/engine.html> engine now heats up and 
the idiot temp  <https://www.cruisersforum.com/forums/tags/alarm.html> alarm 
comes off. I have a yanmar 3gm30 that has been modified to be coolant cooled.

My engine had unknown green  
<https://www.cruisersforum.com/forums/tags/coolant.html> coolant, I went ahead 
and flushed it and replaced it with the pink good stuff. While troubleshooting 
the overheat, I checked the impellers again(both new), pumps rotate with no 
problem or leak and sea  <https://www.cruisersforum.com/forums/tags/water.html> 
water ofF the  <https://www.cruisersforum.com/forums/tags/exhaust.html> exhaust 
and no leakage anywhere. So I think it has to be the coolant circuit. Something 
weird is that the hose from the  
<https://www.cruisersforum.com/forums/tags/heat%20exchanger.html> heat 
exchanger to the  <https://www.cruisersforum.com/forums/tags/pump.html> pump 
until the thermostat, stays cold. But from the thermostat to the engine block 
and the last hose from block to the  
<https://www.cruisersforum.com/forums/tags/heat%20exchanger.html> heat 
exchanger is really hot. All hoses are replaced and checked for blockage. Is 
that an air block? If so, how can I bleed the system? Couldn’t find that 
anywhere. Also after the engine cools, I opened all the hoses to check if they 
have flow on them, and they all had coolant except these last 2 from the engine 
block to the heat exchanger. Is that normal? Should I fill them up manually 
with coolant to try to get rid of any air blockage?

Last but not least, I may have trouble shoot the engine so much, and now I see 
steam that comes off or close by the 1st cylinder. Also a lot of blue smoke 
from the  <https://www.cruisersforum.com/forums/tags/exhaust.html> exhaust. 
That never happened before. Did I mess up big time?

Thank you again for your time

 

Enterprise

C

San Francisco 

MAZEN AZIZ
 <https://mazenaziz.wixsite.com/mazenaziz> 
https://mazenaziz.wixsite.com/mazenaziz 

 

"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid

 

"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali

___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Overheating yanmar 3gm30

[Matthew via CnC-List]

What’s the pink good stuff?  Around here, pink antifreeze is used for 
winterizing potable water systems.  It is not the good stuff for engines (at 
least not mine).

 

From: CnC-List  On Behalf Of Mazen Aziz via 
CnC-List
Sent: Tuesday, August 25, 2020 10:55 PM
To: cnc-list@cnc-list.com
Cc: Mazen Aziz 
Subject: Stus-List Overheating yanmar 3gm30

 

Hi everyone,

Hope everyone is doing well and staying safe. So since I got the boat(C 35) 
2 months ago, I have been doing all the typical engine Maintinance. I never 
touched an  <https://www.cruisersforum.com/forums/tags/engine.html> engine 
before with absolutely no experience. Got the  
<https://www.cruisersforum.com/forums/tags/boat.html> boat and started to 
follow the manual from  
<https://www.cruisersforum.com/forums/tags/oil%20change.html> oil change, 
filters, impellers etc. However, my  
<https://www.cruisersforum.com/forums/tags/engine.html> engine now heats up and 
the idiot temp  <https://www.cruisersforum.com/forums/tags/alarm.html> alarm 
comes off. I have a yanmar 3gm30 that has been modified to be coolant cooled.

My engine had unknown green  
<https://www.cruisersforum.com/forums/tags/coolant.html> coolant, I went ahead 
and flushed it and replaced it with the pink good stuff. While troubleshooting 
the overheat, I checked the impellers again(both new), pumps rotate with no 
problem or leak and sea  <https://www.cruisersforum.com/forums/tags/water.html> 
water ofF the  <https://www.cruisersforum.com/forums/tags/exhaust.html> exhaust 
and no leakage anywhere. So I think it has to be the coolant circuit. Something 
weird is that the hose from the  
<https://www.cruisersforum.com/forums/tags/heat%20exchanger.html> heat 
exchanger to the  <https://www.cruisersforum.com/forums/tags/pump.html> pump 
until the thermostat, stays cold. But from the thermostat to the engine block 
and the last hose from block to the  
<https://www.cruisersforum.com/forums/tags/heat%20exchanger.html> heat 
exchanger is really hot. All hoses are replaced and checked for blockage. Is 
that an air block? If so, how can I bleed the system? Couldn’t find that 
anywhere. Also after the engine cools, I opened all the hoses to check if they 
have flow on them, and they all had coolant except these last 2 from the engine 
block to the heat exchanger. Is that normal? Should I fill them up manually 
with coolant to try to get rid of any air blockage?

Last but not least, I may have trouble shoot the engine so much, and now I see 
steam that comes off or close by the 1st cylinder. Also a lot of blue smoke 
from the  <https://www.cruisersforum.com/forums/tags/exhaust.html> exhaust. 
That never happened before. Did I mess up big time?

Thank you again for your time





Enterprise

C

San Francisco 



MAZEN AZIZ
 <https://mazenaziz.wixsite.com/mazenaziz> 
https://mazenaziz.wixsite.com/mazenaziz 



 

"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid

 

"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali

___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Overheating yanmar 3gm30

[Edd Schillay via CnC-List]

Mazen,

Have you checked the amount of antifreeze? Try adding a little. 

When was the last time that the antifreeze system was flushed and cleaned, 
including the heat exchanger? 

All the best, 

Edd

———-
Edd M. Schillay
Captain of the “Starship Enterprise”
C 37+ | Sail No.: NCC-1701-B
Venice Yacht Club | Venice Island, FL
www.StarshipSailing.com
———-
914.774.9767   | Mobile
———-
Sent via iPhone 11 Pro
iPhone. iTypos. iApologize


On Aug 25, 2020, at 11:20 PM, Mazen Aziz via CnC-List  
wrote:

 Hi josh, 

Yes sorry should have mentioned. Did these 2 steps as well. Thermostat is 
working fine and running the engine without the thermostat still didn’t help. 
Is that normal that the hose from the engine block to the heat exchanger is 
empty without coolant when I check it?



MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz

“To most people, the sky is the limit. To those who love aviation, the sky is 
home. “Jerry Crawford

"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid

"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali


>> On Aug 25, 2020, at 8:12 PM, Josh Muckley via CnC-List 
>>  wrote:
>> 
> 
> Sounds like you may have solved your own problem.  If the one hose leading to 
> the thermostat is cold and the other is hot then you should check that the 
> thermostat is working.  You can remove it and test in a pot of hot water.  
> Or, you can even remove it and reassemble the engine (temporarily) without it 
> to see if that solves the problem.
> 
> Josh Muckley 
> S/V Sea Hawk 
> 1989 C 37+
> Solomons, MD 
> 
>> On Tue, Aug 25, 2020, 22:55 Mazen Aziz via CnC-List  
>> wrote:
>> Hi everyone,
>> 
>> Hope everyone is doing well and staying safe. So since I got the boat(C 
>> 35) 2 months ago, I have been doing all the typical engine Maintinance. I 
>> never touched an engine before with absolutely no experience. Got the boat 
>> and started to follow the manual from oil change, filters, impellers etc. 
>> However, my engine now heats up and the idiot temp alarm comes off. I have a 
>> yanmar 3gm30 that has been modified to be coolant cooled.
>> 
>> My engine had unknown green coolant, I went ahead and flushed it and 
>> replaced it with the pink good stuff. While troubleshooting the overheat, I 
>> checked the impellers again(both new), pumps rotate with no problem or leak 
>> and sea water ofF the exhaust and no leakage anywhere. So I think it has to 
>> be the coolant circuit. Something weird is that the hose from the heat 
>> exchanger to the pump until the thermostat, stays cold. But from the 
>> thermostat to the engine block and the last hose from block to the heat 
>> exchanger is really hot. All hoses are replaced and checked for blockage. Is 
>> that an air block? If so, how can I bleed the system? Couldn’t find that 
>> anywhere. Also after the engine cools, I opened all the hoses to check if 
>> they have flow on them, and they all had coolant except these last 2 from 
>> the engine block to the heat exchanger. Is that normal? Should I fill them 
>> up manually with coolant to try to get rid of any air blockage?
>> 
>> Last but not least, I may have trouble shoot the engine so much, and now I 
>> see steam that comes off or close by the 1st cylinder. Also a lot of blue 
>> smoke from the exhaust. That never happened before. Did I mess up big time?
>> 
>> Thank you again for your time
>> 
>> Enterprise
>> C
>> San Francisco 
>> 
>> MAZEN AZIZ
>> https://mazenaziz.wixsite.com/mazenaziz 
>>  
>> "I don't think that architecture is only about shelter, is only about a very 
>> simple enclosure. It should be able to excite you, to calm you, to make you 
>> think." Zaha Hadid
>> 
>> "It isn't the mountains ahead to climb that wear you out; it's the pebble in 
>> your shoe." Muhammad Ali
>> ___
>> 
>> Thanks everyone for supporting this list with your contributions.  Each and 
>> every one is greatly appreciated.  If you want to support the list - use 
>> PayPal to send contribution --   https://www.paypal.me/stumurray
>> 
> ___
> 
> Thanks everyone for supporting this list with your contributions.  Each and 
> every one is greatly appreciated.  If you want to support the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray
> 
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the 

Re: Stus-List Overheating yanmar 3gm30

[Della Barba, Joe via CnC-List]

When I added a heat exchanger to my Atomic 4 I went nuts with it overheating at 
first. It took some doing to get all the air out of the system and all the 
hoses should be full.

Joe Della Barba Coquina C 35  MK I
www.dellabarba.com



From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Mazen Aziz 
via CnC-List
Sent: Tuesday, August 25, 2020 11:20 PM
To: cnc-list@cnc-list.com
Cc: Mazen Aziz 
Subject: [EXTERNAL] Re: Stus-List Overheating yanmar 3gm30

Hi josh,

Yes sorry should have mentioned. Did these 2 steps as well. Thermostat is 
working fine and running the engine without the thermostat still didn’t help. 
Is that normal that the hose from the engine block to the heat exchanger is 
empty without coolant when I check it?


MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz<https://protect2.fireeye.com/v1/url?k=24b6f381-7820c562-24b6daf6-0cc47adc5fec-99253136cd722f36=1=8fde8b82-f7f4-4680-a5ca-e5e778138da8=https%3A%2F%2Fmazenaziz.wixsite.com%2Fmazenaziz>


“To most people, the sky is the limit. To those who love aviation, the sky is 
home. “Jerry Crawford


"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid

"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali



On Aug 25, 2020, at 8:12 PM, Josh Muckley via CnC-List 
mailto:cnc-list@cnc-list.com>> wrote:

Sounds like you may have solved your own problem.  If the one hose leading to 
the thermostat is cold and the other is hot then you should check that the 
thermostat is working.  You can remove it and test in a pot of hot water.  Or, 
you can even remove it and reassemble the engine (temporarily) without it to 
see if that solves the problem.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Tue, Aug 25, 2020, 22:55 Mazen Aziz via CnC-List 
mailto:cnc-list@cnc-list.com>> wrote:
Hi everyone,

Hope everyone is doing well and staying safe. So since I got the boat(C 35) 
2 months ago, I have been doing all the typical engine Maintinance. I never 
touched an engine<https://www.cruisersforum.com/forums/tags/engine.html> before 
with absolutely no experience. Got the 
boat<https://www.cruisersforum.com/forums/tags/boat.html> and started to follow 
the manual from oil 
change<https://www.cruisersforum.com/forums/tags/oil%20change.html>, filters, 
impellers etc. However, my 
engine<https://www.cruisersforum.com/forums/tags/engine.html> now heats up and 
the idiot temp alarm<https://www.cruisersforum.com/forums/tags/alarm.html> 
comes off. I have a yanmar 3gm30 that has been modified to be coolant cooled.

My engine had unknown green 
coolant<https://www.cruisersforum.com/forums/tags/coolant.html>, I went ahead 
and flushed it and replaced it with the pink good stuff. While troubleshooting 
the overheat, I checked the impellers again(both new), pumps rotate with no 
problem or leak and sea 
water<https://www.cruisersforum.com/forums/tags/water.html> ofF the 
exhaust<https://www.cruisersforum.com/forums/tags/exhaust.html> and no leakage 
anywhere. So I think it has to be the coolant circuit. Something weird is that 
the hose from the heat 
exchanger<https://www.cruisersforum.com/forums/tags/heat%20exchanger.html> to 
the pump<https://www.cruisersforum.com/forums/tags/pump.html> until the 
thermostat, stays cold. But from the thermostat to the engine block and the 
last hose from block to the heat 
exchanger<https://www.cruisersforum.com/forums/tags/heat%20exchanger.html> is 
really hot. All hoses are replaced and checked for blockage. Is that an air 
block? If so, how can I bleed the system? Couldn’t find that anywhere. Also 
after the engine cools, I opened all the hoses to check if they have flow on 
them, and they all had coolant except these last 2 from the engine block to the 
heat exchanger. Is that normal? Should I fill them up manually with coolant to 
try to get rid of any air blockage?

Last but not least, I may have trouble shoot the engine so much, and now I see 
steam that comes off or close by the 1st cylinder. Also a lot of blue smoke 
from the exhaust<https://www.cruisersforum.com/forums/tags/exhaust.html>. That 
never happened before. Did I mess up big time?

Thank you again for your time

Enterprise
C
San Francisco

MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz<https://protect2.fireeye.com/v1/url?k=53ae3065-0f380686-53ae1912-0cc47adc5fec-20859f27f3f7a9e2=1=8fde8b82-f7f4-4680-a5ca-e5e778138da8=https%3A%2F%2Fmazenaziz.wixsite.com%2Fmazenaziz>




"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid


"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad

Re: Stus-List Overheating Yanmar 3gm30

[John and Maryann Read via CnC-List]

Just some thoughts based on our 3GM with Sender fresh water cooling

1)  It is not normal for any hose to be dry

2)  Check the fluid level in the Sendur heat exchanger.  Run engine without 
radiator cap until thermostat opens allowing full coolant flow.  Top off with 
anti freeze as needed.  This is the engine side of the system – not the water.  
Check to verify fluid is moving in exchanger. If system has been drained, there 
may be an air pocket somewhere that needs to be pushed out by fluid. Exchanger 
fluid level should be absolutely full when warm. There should be a plastic 
overflow / expansion tank connected to exchanger just under cap.  Should have 1 
– 2 inches of coolant.

3)   Are you getting water out the exhaust??  If so then water side of 
system is probably OK.  If not, common issue Is exhaust riser water passage 
gets blocked.  Fix is replace riser

 

Best of luck – the 3GM is a great engine

 

John and Maryann

Legacy III

1982 C 34

Noank, CT

 

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Re: Stus-List Overheating yanmar 3gm30

[Mazen Aziz via CnC-List]

Hi josh,

Yes sorry should have mentioned. Did these 2 steps as well. Thermostat is 
working fine and running the engine without the thermostat still didn’t help. 
Is that normal that the hose from the engine block to the heat exchanger is 
empty without coolant when I check it?



MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz

“To most people, the sky is the limit. To those who love aviation, the sky is 
home. “Jerry Crawford

"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid

"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali


On Aug 25, 2020, at 8:12 PM, Josh Muckley via CnC-List  
wrote:


Sounds like you may have solved your own problem.  If the one hose leading to 
the thermostat is cold and the other is hot then you should check that the 
thermostat is working.  You can remove it and test in a pot of hot water.  Or, 
you can even remove it and reassemble the engine (temporarily) without it to 
see if that solves the problem.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Tue, Aug 25, 2020, 22:55 Mazen Aziz via CnC-List 
mailto:cnc-list@cnc-list.com>> wrote:
Hi everyone,

Hope everyone is doing well and staying safe. So since I got the boat(C 35) 
2 months ago, I have been doing all the typical engine Maintinance. I never 
touched an engine before 
with absolutely no experience. Got the 
boat and started to follow 
the manual from oil 
change, filters, 
impellers etc. However, my 
engine now heats up and 
the idiot temp alarm 
comes off. I have a yanmar 3gm30 that has been modified to be coolant cooled.

My engine had unknown green 
coolant, I went ahead 
and flushed it and replaced it with the pink good stuff. While troubleshooting 
the overheat, I checked the impellers again(both new), pumps rotate with no 
problem or leak and sea 
water ofF the 
exhaust and no leakage 
anywhere. So I think it has to be the coolant circuit. Something weird is that 
the hose from the heat 
exchanger to 
the pump until the 
thermostat, stays cold. But from the thermostat to the engine block and the 
last hose from block to the heat 
exchanger is 
really hot. All hoses are replaced and checked for blockage. Is that an air 
block? If so, how can I bleed the system? Couldn’t find that anywhere. Also 
after the engine cools, I opened all the hoses to check if they have flow on 
them, and they all had coolant except these last 2 from the engine block to the 
heat exchanger. Is that normal? Should I fill them up manually with coolant to 
try to get rid of any air blockage?

Last but not least, I may have trouble shoot the engine so much, and now I see 
steam that comes off or close by the 1st cylinder. Also a lot of blue smoke 
from the exhaust. That 
never happened before. Did I mess up big time?

Thank you again for your time

Enterprise
C
San Francisco


MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz



"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid


"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Re: Stus-List Overheating yanmar 3gm30

[Josh Muckley via CnC-List]

Sounds like you may have solved your own problem.  If the one hose leading
to the thermostat is cold and the other is hot then you should check that
the thermostat is working.  You can remove it and test in a pot of hot
water.  Or, you can even remove it and reassemble the engine (temporarily)
without it to see if that solves the problem.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Tue, Aug 25, 2020, 22:55 Mazen Aziz via CnC-List 
wrote:

> Hi everyone,
>
> Hope everyone is doing well and staying safe. So since I got the
> boat(C 35) 2 months ago, I have been doing all the typical engine
> Maintinance. I never touched an engine
>  before with
> absolutely no experience. Got the boat
>  and started to
> follow the manual from oil change
> , filters,
> impellers etc. However, my engine
>  now heats up and
> the idiot temp alarm
>  comes off. I have
> a yanmar 3gm30 that has been modified to be coolant cooled.
>
> My engine had unknown green coolant
> , I went ahead
> and flushed it and replaced it with the pink good stuff. While
> troubleshooting the overheat, I checked the impellers again(both new),
> pumps rotate with no problem or leak and sea water
>  ofF the exhaust
>  and no leakage
> anywhere. So I think it has to be the coolant circuit. Something weird is
> that the hose from the heat exchanger
>  to the
> pump  until the
> thermostat, stays cold. But from the thermostat to the engine block and the
> last hose from block to the heat exchanger
>  is
> really hot. All hoses are replaced and checked for blockage. Is that an air
> block? If so, how can I bleed the system? Couldn’t find that anywhere. Also
> after the engine cools, I opened all the hoses to check if they have flow
> on them, and they all had coolant except these last 2 from the engine block
> to the heat exchanger. Is that normal? Should I fill them up manually with
> coolant to try to get rid of any air blockage?
>
> Last but not least, I may have trouble shoot the engine so much, and now I
> see steam that comes off or close by the 1st cylinder. Also a lot of blue
> smoke from the exhaust
> . That never
> happened before. Did I mess up big time?
>
> Thank you again for your time
>
> Enterprise
> C
> San Francisco
>
> *MAZEN AZIZ*
> https://mazenaziz.wixsite.com/mazenaziz
>
>
>
> "I don't think that architecture is only about shelter, is only about a
> very simple enclosure. It should be able to excite you, to calm you, to
> make you think." Zaha Hadid
>
>
> "It isn't the mountains ahead to climb that wear you out; it's the pebble
> in your shoe." Muhammad Ali
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and every one is greatly appreciated.  If you want to support the list -
> use PayPal to send contribution --   https://www.paypal.me/stumurray
>
>
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray

Stus-List Overheating yanmar 3gm30

[Mazen Aziz via CnC-List]

Hi everyone,

Hope everyone is doing well and staying safe. So since I got the boat(C 35) 
2 months ago, I have been doing all the typical engine Maintinance. I never 
touched an engine before 
with absolutely no experience. Got the 
boat and started to follow 
the manual from oil 
change, filters, 
impellers etc. However, my 
engine now heats up and 
the idiot temp alarm 
comes off. I have a yanmar 3gm30 that has been modified to be coolant cooled.

My engine had unknown green 
coolant, I went ahead 
and flushed it and replaced it with the pink good stuff. While troubleshooting 
the overheat, I checked the impellers again(both new), pumps rotate with no 
problem or leak and sea 
water ofF the 
exhaust and no leakage 
anywhere. So I think it has to be the coolant circuit. Something weird is that 
the hose from the heat 
exchanger to 
the pump until the 
thermostat, stays cold. But from the thermostat to the engine block and the 
last hose from block to the heat 
exchanger is 
really hot. All hoses are replaced and checked for blockage. Is that an air 
block? If so, how can I bleed the system? Couldn’t find that anywhere. Also 
after the engine cools, I opened all the hoses to check if they have flow on 
them, and they all had coolant except these last 2 from the engine block to the 
heat exchanger. Is that normal? Should I fill them up manually with coolant to 
try to get rid of any air blockage?

Last but not least, I may have trouble shoot the engine so much, and now I see 
steam that comes off or close by the 1st cylinder. Also a lot of blue smoke 
from the exhaust. That 
never happened before. Did I mess up big time?

Thank you again for your time

Enterprise
C
San Francisco


MAZEN AZIZ
https://mazenaziz.wixsite.com/mazenaziz



"I don't think that architecture is only about shelter, is only about a very 
simple enclosure. It should be able to excite you, to calm you, to make you 
think." Zaha Hadid


"It isn't the mountains ahead to climb that wear you out; it's the pebble in 
your shoe." Muhammad Ali
___

Thanks everyone for supporting this list with your contributions.  Each and 
every one is greatly appreciated.  If you want to support the list - use PayPal 
to send contribution --   https://www.paypal.me/stumurray