Stus-List Fuel lift pump 30-1, clean or replace with electric?
My 2QM15 is not getting fuel, It gets to the lift pump input but no further. I just had the fuel polished after some crud problems, so likely either there's crud blocking the diaphragm hole, or the new additives made the 42 yr old rubber diaphargm "retire". Some years sgo there was discussion about replacing these with a car-parts electric fuel pump. I'd like to do that, but would love advice re wiring it and blocking off the old lift pimp outlet. Nate Flesness Sarah Jean 1980 30-1 Saint Croix Rivr, WI Blue Raven 1994 Tartan 31 Siskiwit Bay Marina, Lake Superior Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Re: Stus-List Fuel lift pump
1/4 inch On Wed, Jul 22, 2020, 19:46 Tom Buscaglia via CnC-List < cnc-list@cnc-list.com> wrote: > I picked up a new lift play today and will install it soon. I am > considering adding an electric pump between the tank and the lift pump. > Does anyone know the inside diameter of that feed fuel line? I think I > ought to know before I cut mine. > > thx > > > > > Message: 1 > Date: Wed, 22 Jul 2020 14:24:53 -0400 > From: Len Mitchell > To: CNC List > Subject: Stus-List Fuel lift pump > Message-ID: <2d4555d9-68ac-462d-b1e4-fbcbc24be...@gmail.com> > Content-Type: text/plain; charset=utf-8 > > Joe, I like the remote fuel pressure gauge! That looks like aviation or > race car technology. Tom is trying to find out why he can?t get that last > 15 gallons of fuel. I believe Josh has the same Yanmar and believe he > posted his vacuum numbers so there is something to compare to. He can also > shut off the fuel valve when running the engine and get a sense of what > vacuum the fuel pump is drawing. If it won?t hold vacuum maybe there is an > air leak somewhere. If the pump won?t make 1 inch of mercury he knows it?s > probably a pump problem. That?s all I was trying to suggest before he gets > into a new pump. And as a bonus for around 20$ he will also have a primary > fuel filter monitor. > Len > > Sent from my mobile device. > > > -- > > .¤º°`°º¤,¸¸,¤º°`°º¤¤º°`°º¤,¸¸,¤º°`°º¤. > Tom & Lynn Buscaglia > SV Alera > C&C 37+/40 > Vashon Island WA > (206) 463-9200 > www.sv-alera.com > > > ___ > > 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 Fuel lift pump
I picked up a new lift play today and will install it soon. I am considering adding an electric pump between the tank and the lift pump. Does anyone know the inside diameter of that feed fuel line? I think I ought to know before I cut mine. thx Message: 1 Date: Wed, 22 Jul 2020 14:24:53 -0400 From: Len Mitchell To: CNC List Subject: Stus-List Fuel lift pump Message-ID: <2d4555d9-68ac-462d-b1e4-fbcbc24be...@gmail.com> Content-Type: text/plain; charset=utf-8 Joe, I like the remote fuel pressure gauge! That looks like aviation or race car technology. Tom is trying to find out why he can?t get that last 15 gallons of fuel. I believe Josh has the same Yanmar and believe he posted his vacuum numbers so there is something to compare to. He can also shut off the fuel valve when running the engine and get a sense of what vacuum the fuel pump is drawing. If it won?t hold vacuum maybe there is an air leak somewhere. If the pump won?t make 1 inch of mercury he knows it?s probably a pump problem. That?s all I was trying to suggest before he gets into a new pump. And as a bonus for around 20$ he will also have a primary fuel filter monitor. Len Sent from my mobile device. -- .¤º°`°º¤,¸¸,¤º°`°º¤¤º°`°º¤,¸¸,¤º°`°º¤. Tom & Lynn Buscaglia SV Alera C&C 37+/40 Vashon Island WA (206) 463-9200 www.sv-alera.com ___ 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 Fuel lift pump
Joe, I like the remote fuel pressure gauge! That looks like aviation or race car technology. Tom is trying to find out why he can’t get that last 15 gallons of fuel. I believe Josh has the same Yanmar and believe he posted his vacuum numbers so there is something to compare to. He can also shut off the fuel valve when running the engine and get a sense of what vacuum the fuel pump is drawing. If it won’t hold vacuum maybe there is an air leak somewhere. If the pump won’t make 1 inch of mercury he knows it’s probably a pump problem. That’s all I was trying to suggest before he gets into a new pump. And as a bonus for around 20$ he will also have a primary fuel filter monitor. Len Sent from my mobile device. ___ 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 Fuel Lift Pump
I am wondering if there is a chance that is not your original 40 Gal fuel tank? Try measuring it and calculate the total capacity. Minus the air space you can’t fill up to the top. Bill Coleman From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Tom Buscaglia via CnC-List Sent: Tuesday, July 21, 2020 7:03 PM To: cnc-list@cnc-list.com Cc: Tom Buscaglia Subject: Stus-List Fuel Lift Pump So, if I understand recent responses to my recent post on running out of fuel at less than an empty tank, the theory is that with a weak fuel lift pump at a certain fuel level in the tank, the pump would stop lifting fuel, thereby causing the engine to run out of fuel. So, guess I’ll take a shot at replacing it and seeing if that solves the problem. Anyone replace the fuel lift pump on a Yanmar 3HM35F? I am wondering if the arm that rides the cam is above the at recast engine oil level. thx Tom Buscaglia S/V Alera 1990 C&C 37+/40 Vashon WA P 206.463.9200 C 305.409.3660 ___ 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 Fuel lift pump
Vacuum gauges are useful, but they only tell half the story. No vacuum can indicate all is well or it can indicate the fuel pump failed. The engine - gas or diesel - could not care less about vacuum, it wants fuel. If you get this: https://www.ebay.com/itm/Pressure-Transducer-Gauge-15-psi-2-1-16-52mm-analog-voltage-input-LED-light/252098516378?hash=item3ab23e159a:g:DRYAAOSwLghZsBuZ and this https://www.ebay.com/itm/Pressure-transducer-sender-15-psi-12V-10-25V-wide-for-oil-fuel-air-water/262874558318?hash=item3d348b6f6e:g:mv0AAOSwIwJZgn8t:sc:USPSFirstClass!21666!US!-1 You will see your fuel pressure and the gauge lights up red if it goes below 3 PSI. They are available in various ranges, I use a 5 PSI version for my A4 that lights up at 1 PSI. The electric sender avoids running pressurized fuel around the boat, which is good in general and really good for gasoline. Joe Coquina ___ 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 Fuel lift pump
Tom, it’s your boat and wallet but an inexpensive vacuum gauge will tell the tale. I would hate to buy an expensive Yanmar pump and find out it’s something more simple unless you want a spare pump anyway. They are available on amazon or eBay and maybe 20$ https://www.generalfilters.com/products/general-fuel-oil-products/garber-filters/accessories/Filter-Restrictor-Indicator-Gauge_PT111.html Len Sent from my mobile device. ___ 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 Fuel Lift Pump
I had a similar problem with the lift pump on my Beta 28. The tank location compared to the lift capability of the Beta was marginal, even tho the lift pump was working ‘fine’. My diesel mechanic recommended bypassing the mechanical lift pump and using an electric pump. Installed it with a switchable spare( electric pump had built in filter) and no more problems! Might be a better and cheaper solution than another mechanical lift pump. Charlie NelsonWater Phantom 1995 C&C 36 XL/kcb Sent from AOL Mobile Mail Get the new AOL app: mail.mobile.aol.com On Tuesday, July 21, 2020, Tom Buscaglia via CnC-List wrote: So, if I understand recent responses to my recent post on running out of fuel at less than an empty tank, the theory is that with a weak fuel lift pump at a certain fuel level in the tank, the pump would stop lifting fuel, thereby causing the engine to run out of fuel. So, guess I’ll take a shot at replacing it and seeing if that solves the problem. Anyone replace the fuel lift pump on a Yanmar 3HM35F? I am wondering if the arm that rides the cam is above the at recast engine oil level. thx Tom BuscagliaS/V Alera 1990 C&C 37+/40Vashon WAP 206.463.9200C 305.409.3660 ___ 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 Fuel Lift Pump
Tom, The lift pump arm usually rides on a lobe on the camshaft, which above the crankshaft, which is well above the oil level. A mechanical lift pump is fairly easy to change. If you want feel free to call me and I can walk you through the process. Doug Mountjoysv Rebecca Leah C&C Landfall 39Port Orchard yacht club253-208-1412 Original message From: Tom Buscaglia via CnC-List Date: 7/21/20 16:03 (GMT-08:00) To: cnc-list@cnc-list.com Cc: Tom Buscaglia Subject: Stus-List Fuel Lift Pump So, if I understand recent responses to my recent post on running out of fuel at less than an empty tank, the theory is that with a weak fuel lift pump at a certain fuel level in the tank, the pump would stop lifting fuel, thereby causing the engine to run out of fuel.So, guess I’ll take a shot at replacing it and seeing if that solves the problem.Anyone replace the fuel lift pump on a Yanmar 3HM35F? I am wondering if the arm that rides the cam is above the at recast engine oil level.thxTom BuscagliaS/V Alera 1990 C&C 37+/40Vashon WAP 206.463.9200C 305.409.3660___ 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 Fuel Lift Pump
I changed mine out. I don’t recall losing any oil. Rick Paikea. 37+. Bremerton, WA Sent from my iPad > On Jul 21, 2020, at 16:04, Tom Buscaglia via CnC-List > wrote: > > So, if I understand recent responses to my recent post on running out of > fuel at less than an empty tank, the theory is that with a weak fuel lift > pump at a certain fuel level in the tank, the pump would stop lifting fuel, > thereby causing the engine to run out of fuel. > > So, guess I’ll take a shot at replacing it and seeing if that solves the > problem. > > Anyone replace the fuel lift pump on a Yanmar 3HM35F? I am wondering if the > arm that rides the cam is above the at recast engine oil level. > > thx > > Tom Buscaglia > S/V Alera > 1990 C&C 37+/40 > Vashon WA > P 206.463.9200 > C 305.409.3660 > > > ___ > > 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 Fuel Lift Pump
So, if I understand recent responses to my recent post on running out of fuel at less than an empty tank, the theory is that with a weak fuel lift pump at a certain fuel level in the tank, the pump would stop lifting fuel, thereby causing the engine to run out of fuel. So, guess I’ll take a shot at replacing it and seeing if that solves the problem. Anyone replace the fuel lift pump on a Yanmar 3HM35F? I am wondering if the arm that rides the cam is above the at recast engine oil level. thx Tom Buscaglia S/V Alera 1990 C&C 37+/40 Vashon WA P 206.463.9200 C 305.409.3660 ___ 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
