Re: [Chevelle-list] Hesitates!
Thanks! Again!
Did it the "scientific" way this time &
the off-idle bog is lmost gone :-)
I guess I have to experiment a little bit more with
the acc pump, nozzles
vacuum advance, and jets to get it 100% bog
free?
Got the seatbelts mounted, the car stereo working
so today I'm gonna
do some serious cruisin' for the first time,
in a lng time :-)
With a bit of luck I can attend som car shows too
:-o
Pelle
- Original Message -
From:
Shawn
Price
To: The Chevelle Mailing List
Sent: Tuesday, July 25, 2006 12:17
PM
Subject: Re: [Chevelle-list]
Hesitates!
Pelle,
Check out this website for a list of really great tuning articles
for both Holley and Qjet. The Author of the carb tuning papers, Lars Grimsrud
is a regular on corvetteforum.com. Most of the articles are relevant to C2 and
C3 corvettes, but the ones on tuning, timing, and vacuum are some of the best
I've ever seen. He really knows how to troubleshoot and explain the technical
stuff.
http://69.253.166197/page1/page65/page65.html
Hope this helps.
--
Shawn
On Jul 25, 2006, at 3:52 AM, Pelle Andersson wrote:
Good idea! (doh! why didn't I
think of this?)
I'll disconnect the pumps to see
what happens!
I'll buy an assortment of acc
pump nozzles too.
I've got a feeling that it's
running a bit too lean!?
No black smoke
puffs!
Pelle
- Original Message
-
From:
Shawn
Price
To:
The
Chevelle Mailing List
Sent:
Monday, July 24, 2006 11:04 PM
Subject: Re:
[Chevelle-list] Hesitates!
Pelle,
The problem could be the acc pump is making it too rich (too
big a shot) or too lean (not enough). Does the exhaust shoot a puff of
black smoke when you nail the throttle? The easiest way to test this is to
disable the pump and see if the hesitation get better or worse. I've only
been studying up on QJets, so I don't know how to tell you to do this, but
if the car runs better without the pump, then it's too much of a shot, and
you should go down a shooter size and test it again.
--
Shawn
On Jul 24, 2006, at 2:15 PM, Pelle Andersson wrote:
The
primary acc pump's (30cc) been disassembled & checked
& everything's ok
as
far as I can see!? No dirt, no corrosion, no dried out old
rubber!
Pelle
- Original Message
-
From:
[EMAIL PROTECTED]
To:
Chevelle-list@chevelles.net
Sent:
Monday, July 24, 2006 8:08 PM
Subject:
Re: [Chevelle-list] Hesitates!
Accelerator
pump?
Re: [Chevelle-list] Hesitates!
Thanks! Pelle - Original Message - From: Shawn Price To: The Chevelle Mailing List Sent: Tuesday, July 25, 2006 12:17 PM Subject: Re: [Chevelle-list] Hesitates! Pelle, Check out this website for a list of really great tuning articles for both Holley and Qjet. The Author of the carb tuning papers, Lars Grimsrud is a regular on corvetteforum.com. Most of the articles are relevant to C2 and C3 corvettes, but the ones on tuning, timing, and vacuum are some of the best I've ever seen. He really knows how to troubleshoot and explain the technical stuff. http://69.253.166197/page1/page65/page65.html Hope this helps. -- Shawn On Jul 25, 2006, at 3:52 AM, Pelle Andersson wrote: Good idea! (doh! why didn't I think of this?) I'll disconnect the pumps to see what happens! I'll buy an assortment of acc pump nozzles too. I've got a feeling that it's running a bit too lean!? No black smoke puffs! Pelle - Original Message - From: Shawn Price To: The Chevelle Mailing List Sent: Monday, July 24, 2006 11:04 PM Subject: Re: [Chevelle-list] Hesitates! Pelle, The problem could be the acc pump is making it too rich (too big a shot) or too lean (not enough). Does the exhaust shoot a puff of black smoke when you nail the throttle? The easiest way to test this is to disable the pump and see if the hesitation get better or worse. I've only been studying up on QJets, so I don't know how to tell you to do this, but if the car runs better without the pump, then it's too much of a shot, and you should go down a shooter size and test it again. -- Shawn On Jul 24, 2006, at 2:15 PM, Pelle Andersson wrote: The primary acc pump's (30cc) been disassembled & checked & everything's ok as far as I can see!? No dirt, no corrosion, no dried out old rubber! Pelle - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Monday, July 24, 2006 8:08 PM Subject: Re: [Chevelle-list] Hesitates! Accelerator pump?
Re: [Chevelle-list] Hesitates!
Pelle, Check out this website for a list of really great tuning articles for both Holley and Qjet. The Author of the carb tuning papers, Lars Grimsrud is a regular on corvetteforum.com. Most of the articles are relevant to C2 and C3 corvettes, but the ones on tuning, timing, and vacuum are some of the best I've ever seen. He really knows how to troubleshoot and explain the technical stuff.http://69.253.166.197/page1/page65/page65.htmlHope this helps.--ShawnOn Jul 25, 2006, at 3:52 AM, Pelle Andersson wrote:Good idea! (doh! why didn't I think of this?)I'll disconnect the pumps to see what happens!I'll buy an assortment of acc pump nozzles too.I've got a feeling that it's running a bit too lean!?No black smoke puffs! Pelle - Original Message -From: Shawn PriceTo: The Chevelle Mailing ListSent: Monday, July 24, 2006 11:04 PMSubject: Re: [Chevelle-list] Hesitates!Pelle, The problem could be the acc pump is making it too rich (too big a shot) or too lean (not enough). Does the exhaust shoot a puff of black smoke when you nail the throttle? The easiest way to test this is to disable the pump and see if the hesitation get better or worse. I've only been studying up on QJets, so I don't know how to tell you to do this, but if the car runs better without the pump, then it's too much of a shot, and you should go down a shooter size and test it again.--ShawnOn Jul 24, 2006, at 2:15 PM, Pelle Andersson wrote:The primary acc pump's (30cc) been disassembled & checked & everything's okas far as I can see!? No dirt, no corrosion, no dried out old rubber! Pelle- Original Message -From: [EMAIL PROTECTED]To: Chevelle-list@chevelles.netSent: Monday, July 24, 2006 8:08 PMSubject: Re: [Chevelle-list] Hesitates!Accelerator pump? smime.p7s Description: S/MIME cryptographic signature
Re: [Chevelle-list] Hesitates!
Good idea! (doh! why didn't I think of this?) I'll disconnect the pumps to see what happens! I'll buy an assortment of acc pump nozzles too. I've got a feeling that it's running a bit too lean!? No black smoke puffs! Pelle - Original Message - From: Shawn Price To: The Chevelle Mailing List Sent: Monday, July 24, 2006 11:04 PM Subject: Re: [Chevelle-list] Hesitates! Pelle, The problem could be the acc pump is making it too rich (too big a shot) or too lean (not enough). Does the exhaust shoot a puff of black smoke when you nail the throttle? The easiest way to test this is to disable the pump and see if the hesitation get better or worse. I've only been studying up on QJets, so I don't know how to tell you to do this, but if the car runs better without the pump, then it's too much of a shot, and you should go down a shooter size and test it again. -- Shawn On Jul 24, 2006, at 2:15 PM, Pelle Andersson wrote: The primary acc pump's (30cc) been disassembled & checked & everything's ok as far as I can see!? No dirt, no corrosion, no dried out old rubber! Pelle - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Monday, July 24, 2006 8:08 PM Subject: Re: [Chevelle-list] Hesitates! Accelerator pump?
Re: [Chevelle-list] Hesitates!
The distiributor is a Mallory 8548201.
The carb is a Holley 6213 (4165) 800 CFM DP with vacuum primary.
The shooters got 37 stamped on them so I assume they are 0.037?
The acc pump diaphragms are 30cc.
Pelle
- Original Message -
From:
John
Biddle
To: The Chevelle Mailing List
Sent: Monday, July 24, 2006 10:39
PM
Subject: Re: [Chevelle-list]
Hesitates!
What distributer do you have? Is the vacuum hooked up direct full
time or ported? Also, what type carb; is it double pump or vacuum
secondary? Another possible concern may be the size of the pump
"shooter" in the primary side of carb.
John
- Original Message -
From:
Pelle Andersson
To: The Chevelle Mailing List
Sent: Monday, July 24, 2006 7:00
AM
Subject: Re: [Chevelle-list]
Hesitates!
Hi again!
I turned the distr 180 degrees & installed i by the book!
I've adjusted the ignition back & forth & finally decided that
10 degrees was best!
The hesitation is much shorter now & the engine comes with full
power after it
picks up again, but it still hesitates :-/
Pelle
- Original Message -
From:
Pelle Andersson
To: The Chevelle Mailing List
Sent: Sunday, July 23, 2006 5:53
PM
Subject: Re: [Chevelle-list]
Hesitates!
I tried that & it got marginally better!
I have adjusted the fuel bowl level "by the book"
Since my dist is 180 degrees "off" I have to fix that first
so I can use a lamp to adjust the ignition!
I'll be back
Pelle
- Original Message -
From:
[EMAIL PROTECTED]
To: Chevelle-list@chevelles.net
Sent: Saturday, July 22, 2006 5:03
PM
Subject: Re: [Chevelle-list]
Hesitates!
Try advancing the timing about 4 degrees.
Tom
Re: [Chevelle-list] Hesitates! new version
Maybe you guys need to try Carter AFBs. Mine runs ok. Holly is just too much trouble.You can bolt on a Carter and GO.Larry Williams
Re: [Chevelle-list] Hesitates! new version
not to steal your thunder Pelle, but i have a similar problem, the car dies if i nail the throttle from a dead stop. also if i nail it at hwy speeds it will take off ok, but after i let up and start to cruise at a steady speed the car will jerk one time after about 10-15 seconds- then if i keep at a steady speed it will run fine. it is a stock 350 with a 600-650 double pumper holley carb, is this too big ?? Harlan
Re: [Chevelle-list] Hesitates!
Pelle, Forgive me, but - it sounds like you are giving it too much gas too quick. Now, seriously, check the following - timing, which carb are you using?, carb float level, could be accelerator pump, vacuum leaks?, fuel pressure which will depend on the carb you are using, filter for debris, is the rubber part of the fuel line in good shape?, fuel pump working ok., plugs ok, pull out plugs and check the ends, this should get you in the ballpark. Pelle Andersson wrote: Hi! My 402 BB Hesitates if I give it too much gas too quick! Any ideas? Best regards Pelle __ Chevelle gearheads http://hem.bredband.net/chevellegearheads/
Re: [Chevelle-list] Hesitates!
Pelle, The problem could be the acc pump is making it too rich (too big a shot) or too lean (not enough). Does the exhaust shoot a puff of black smoke when you nail the throttle? The easiest way to test this is to disable the pump and see if the hesitation get better or worse. I've only been studying up on QJets, so I don't know how to tell you to do this, but if the car runs better without the pump, then it's too much of a shot, and you should go down a shooter size and test it again.--ShawnOn Jul 24, 2006, at 2:15 PM, Pelle Andersson wrote:The primary acc pump's (30cc) been disassembled & checked & everything's okas far as I can see!? No dirt, no corrosion, no dried out old rubber! Pelle- Original Message -From: [EMAIL PROTECTED]To: Chevelle-list@chevelles.netSent: Monday, July 24, 2006 8:08 PMSubject: Re: [Chevelle-list] Hesitates!Accelerator pump? smime.p7s Description: S/MIME cryptographic signature
Re: [Chevelle-list] Hesitates!
What distributer do you have? Is the vacuum hooked up direct full
time or ported? Also, what type carb; is it double pump or vacuum
secondary? Another possible concern may be the size of the pump "shooter"
in the primary side of carb.
John
- Original Message -
From:
Pelle Andersson
To: The Chevelle Mailing List
Sent: Monday, July 24, 2006 7:00 AM
Subject: Re: [Chevelle-list]
Hesitates!
Hi again!
I turned the distr 180 degrees & installed i by the book!
I've adjusted the ignition back & forth & finally decided that 10
degrees was best!
The hesitation is much shorter now & the engine comes with full power
after it
picks up again, but it still hesitates :-/
Pelle
- Original Message -
From:
Pelle Andersson
To: The Chevelle Mailing List
Sent: Sunday, July 23, 2006 5:53
PM
Subject: Re: [Chevelle-list]
Hesitates!
I tried that & it got marginally better!
I have adjusted the fuel bowl level "by the book"
Since my dist is 180 degrees "off" I have to fix that first
so I can use a lamp to adjust the ignition!
I'll be back
Pelle
- Original Message -
From:
[EMAIL PROTECTED]
To: Chevelle-list@chevelles.net
Sent: Saturday, July 22, 2006 5:03
PM
Subject: Re: [Chevelle-list]
Hesitates!
Try advancing the timing about 4 degrees.
Tom
Re: [Chevelle-list] Hesitates!
The primary acc pump's (30cc) been disassembled & checked & everything's ok as far as I can see!? No dirt, no corrosion, no dried out old rubber! Pelle - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Monday, July 24, 2006 8:08 PM Subject: Re: [Chevelle-list] Hesitates! Accelerator pump?
Re: [Chevelle-list] Hesitates!
Accelerator pump?
Re: [Chevelle-list] Hesitates!
It's when I floor it or give it gas very
quick!
If I sort of coax it or give it gas very gently i
can get pass the "dead" zone.
The vacum canister should be ok since the distr is
a brand new HEI.
Is there any tuning to do with an "out of the box"
HEI distr?
Float levels are approx in the center of the sight
plug!
Pelle
- Original Message -
From:
Shawn
Price
To: The Chevelle Mailing List
Sent: Monday, July 24, 2006 2:38 PM
Subject: Re: [Chevelle-list]
Hesitates!
Have you checked your vacuum advance cannister? Just want to
make sure that it isn't sticky inside and can release when you open the
throttle.
Now when you say it hesitates, does it do it when you just floor it, or
does it do it when you just ease into the throttle? Or both?
-Shawn
On Jul 24, 2006, at 8:00 AM, Pelle Andersson wrote:
Hi
again!
I turned
the distr 180 degrees & installed i by the book!
I've
adjusted the ignition back & forth & finally decided that 10 degrees
was best!
The
hesitation is much shorter now & the engine comes with full power after
it
picks up
again, but it still hesitates :-/
Pelle
- Original Message
-
From:
Pelle
Andersson
To:
The
Chevelle Mailing List
Sent:
Sunday, July 23, 2006 5:53 PM
Subject: Re:
[Chevelle-list] Hesitates!
I tried
that & it got marginally better!
I have
adjusted the fuel bowl level "by the book"
Since
my dist is 180 degrees "off" I have to fix that first
so I
can use a lamp to adjust the ignition!
I'll be
back
Pelle
- Original Message
-
From:
[EMAIL PROTECTED]
To:
Chevelle-list@chevelles.net
Sent:
Saturday, July 22, 2006 5:03 PM
Subject: Re:
[Chevelle-list] Hesitates!
Try
advancing the timing about 4 degrees.
Tom
Re: [Chevelle-list] Hesitates!
Have you checked your vacuum advance cannister? Just want to make sure that it isn't sticky inside and can release when you open the throttle.Now when you say it hesitates, does it do it when you just floor it, or does it do it when you just ease into the throttle? Or both?-ShawnOn Jul 24, 2006, at 8:00 AM, Pelle Andersson wrote:Hi again! I turned the distr 180 degrees & installed i by the book!I've adjusted the ignition back & forth & finally decided that 10 degrees was best!The hesitation is much shorter now & the engine comes with full power after itpicks up again, but it still hesitates :-/ Pelle - Original Message -From: Pelle AnderssonTo: The Chevelle Mailing ListSent: Sunday, July 23, 2006 5:53 PMSubject: Re: [Chevelle-list] Hesitates!I tried that & it got marginally better!I have adjusted the fuel bowl level "by the book"Since my dist is 180 degrees "off" I have to fix that firstso I can use a lamp to adjust the ignition! I'll be back Pelle- Original Message -From: [EMAIL PROTECTED]To: Chevelle-list@chevelles.netSent: Saturday, July 22, 2006 5:03 PMSubject: Re: [Chevelle-list] Hesitates!Try advancing the timing about 4 degrees. Tom smime.p7s Description: S/MIME cryptographic signature
Re: [Chevelle-list] Hesitates!
Hi again! I turned the distr 180 degrees & installed i by the book! I've adjusted the ignition back & forth & finally decided that 10 degrees was best! The hesitation is much shorter now & the engine comes with full power after it picks up again, but it still hesitates :-/ Pelle - Original Message - From: Pelle Andersson To: The Chevelle Mailing List Sent: Sunday, July 23, 2006 5:53 PM Subject: Re: [Chevelle-list] Hesitates! I tried that & it got marginally better! I have adjusted the fuel bowl level "by the book" Since my dist is 180 degrees "off" I have to fix that first so I can use a lamp to adjust the ignition! I'll be back Pelle - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Saturday, July 22, 2006 5:03 PM Subject: Re: [Chevelle-list] Hesitates! Try advancing the timing about 4 degrees. Tom
Re: [Chevelle-list] Hesitates!
I tried that & it got marginally better! I have adjusted the fuel bowl level "by the book" Since my dist is 180 degrees "off" I have to fix that first so I can use a lamp to adjust the ignition! I'll be back Pelle - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Saturday, July 22, 2006 5:03 PM Subject: Re: [Chevelle-list] Hesitates! Try advancing the timing about 4 degrees. Tom
Re: [Chevelle-list] Hesitates!
Try advancing the timing about 4 degrees. Tom
Re: [Chevelle-list] Hesitates!
I have Holley 800 CFM double pumper with .037 Accelerator Pump Discharge Nozzles & 30 cc diaphragms. Pelle - Original Message - From: Shawn Price To: The Chevelle Mailing List Sent: Saturday, July 22, 2006 2:37 PM Subject: Re: [Chevelle-list] Hesitates! Sounds like it is running too rich, or you have an accelerator pump with too much of a shot. What kind of carb are you running? On Jul 21, 2006, at 11:43 AM, Pelle Andersson wrote: Hi! My 402 BB Hesitates if I give it too much gas too quick! Any ideas? Best regardsPelle__Chevelle gearheadshttp://hem.bredband.net/chevellegearheads/
Re: [Chevelle-list] Hesitates!
Sounds like it is running too rich, or you have an accelerator pump with too much of a shot. What kind of carb are you running?On Jul 21, 2006, at 11:43 AM, Pelle Andersson wrote:Hi! My 402 BB Hesitates if I give it too much gas too quick!Any ideas? Best regardsPelle__Chevelle gearheadshttp://hem.bredband.net/chevellegearheads/ smime.p7s Description: S/MIME cryptographic signature
Re: [Chevelle-list] Hesitates!
Bad vaccuum advance canister? Check this list: http://www.indiehandbook.com/cms/index.php?id=46 Karl Groves Master Certified CIW http://www.karlgroves.com Grayscale Content Management System: http://www.grayscalecms.com Independent Musician's Handbook: http://www.indiebook.com > -Original Message- > From: Pelle Andersson [mailto:[EMAIL PROTECTED] > Sent: Friday, July 21, 2006 11:43 AM > To: The Chevelle Mailing List > Subject: [Chevelle-list] Hesitates! > > Hi! > > My 402 BB Hesitates if I give it too much gas too quick! > Any ideas? > > Best regards > Pelle > __ > Chevelle gearheads > http://hem.bredband.net/chevellegearheads/ >
[Chevelle-list] Hesitates!
Hi! My 402 BB Hesitates if I give it too much gas too quick! Any ideas? Best regardsPelle__Chevelle gearheadshttp://hem.bredband.net/chevellegearheads/
