Fuel Pump dying??
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From: Ol Dirty Durham NC
Fuel Pump dying??
I think I am typing this thread to confirm my suspicions. I think the fuel pump is on its way out. The current engine has 155K on the clock.
Engine runs fine until you punch it and it totally feels like it is stalling or choking out. I first thought it might be dist. b/c it would only do it at 4-5KRPM but now it does it right when you hit the gas hard. It seems to be slowly getting worse. Now it revs to 2K then cuts out and comes back to life after a second or two.
Could it possibly be a regulator issue? I am going to change the fuel filter just to cover the base. What pressure reading should it read on the rails?
I am planning a total engine rebuild and if I have to buy a new fuel pump now I want to get one that can handle 600-650 bhp. Any suggestions?
Engine runs fine until you punch it and it totally feels like it is stalling or choking out. I first thought it might be dist. b/c it would only do it at 4-5KRPM but now it does it right when you hit the gas hard. It seems to be slowly getting worse. Now it revs to 2K then cuts out and comes back to life after a second or two.
Could it possibly be a regulator issue? I am going to change the fuel filter just to cover the base. What pressure reading should it read on the rails?
I am planning a total engine rebuild and if I have to buy a new fuel pump now I want to get one that can handle 600-650 bhp. Any suggestions?
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From: Ol Dirty Durham NC
Originally Posted by AGENT 86
Check the sock on fuel pump. I just replaced mine and the sock was dark brown. Sunlight couldn't get through it.
. Is there a way to clean it?
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by C4CBF
Yeah I am going to pull that out and check it but I thought I heard that the sock isn't sold seperately . Is there a way to clean it?
. Is there a way to clean it?
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From: Ol Dirty Durham NC
Originally Posted by Corvette Kid NC
Possibly, if it's not all to hell.
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From: Ol Dirty Durham NC
Originally Posted by rick lambert
You can get the sock separately, as a matter of fact you have to order the sock because the fuel pump doesn't just come with one-at least at NAPPA.
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From: Savannah GA
You can get the sock at any auto parts store.
I wouldn't doubt it if there aren't more than a handful of different ones for GM cars.
At 155k miles you are living on borrowed time on that pump.
Did you change the fuel filter?
I got a an AC Delco pump from Pep Boys when mine died. You can find a good stock replacement pump anywhere.
If you are going to upgrade I'd look into the ractronix wiring and pump upgrade and go ahead and do it.
JS
I wouldn't doubt it if there aren't more than a handful of different ones for GM cars.
At 155k miles you are living on borrowed time on that pump.
Did you change the fuel filter?
I got a an AC Delco pump from Pep Boys when mine died. You can find a good stock replacement pump anywhere.
If you are going to upgrade I'd look into the ractronix wiring and pump upgrade and go ahead and do it.
JS
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From: Ol Dirty Durham NC
Originally Posted by jsinga
You can get the sock at any auto parts store.
I wouldn't doubt it if there aren't more than a handful of different ones for GM cars.
At 155k miles you are living on borrowed time on that pump.
Did you change the fuel filter?
I got a an AC Delco pump from Pep Boys when mine died. You can find a good stock replacement pump anywhere.
If you are going to upgrade I'd look into the ractronix wiring and pump upgrade and go ahead and do it.
JS
I wouldn't doubt it if there aren't more than a handful of different ones for GM cars.
At 155k miles you are living on borrowed time on that pump.
Did you change the fuel filter?
I got a an AC Delco pump from Pep Boys when mine died. You can find a good stock replacement pump anywhere.
If you are going to upgrade I'd look into the ractronix wiring and pump upgrade and go ahead and do it.
JS
Le Mans Master
Joined: Feb 2006
Posts: 8,753
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From: Louisiana
Originally Posted by rick lambert
Are you sure you don't have a cat problem??
Rick made a good suggestion. A blocked cat could do the same as you described. I would check fuel pressure before thinking about a new pump (might be the problem and might not). Pressure should be 36- 42 psi idle. Tape the guage to your windshield and observe the pressure when the engine cuts out. If pressure drops significantly, fuel pump is probable suspect (IMO, I would change the filter if not done in a while). Bad gas, clogged FP screen, dying pulsator, or water in gas would show same symptoms. As for the cat, look under car at night when up to operating temps and observe the cat to be glowing orange or even use a rubber hammer and hit cat and listen for rattling.
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From: The Top of Utah
Originally Posted by C4CBF
It seems to be slowly getting worse. Now it revs to 2K then cuts out and comes back to life after a second or two.
Originally Posted by C4CBF
Could it possibly be a regulator issue? I am going to change the fuel filter just to cover the base. What pressure reading should it read on the rails?
RACE ON!!!
