fuel problem

30

Asked by Sep 07, 2016 at 12:42 PM about the 1989 Chevrolet Camaro IROC Z

Question type: Maintenance & Repair

I have a Holley carburetor placed on a 350, if I run
the car it will pump gas for a couple of seconds
then shut down, is that the carburetor failing or a
problem with the fuel pump

12 Answers

104,315

Normally a fuel pump, but wasn't this a fuel injected TBI model?

30

I honestly have no idea, the carb seems as the same age as the engine so I kind of doubt it so could be wrong, but it's been running a mechanical pump n an electrical pump don't know if that's a problem

104,315

If your running both make sure the electric pump is one that can be drawn through, no check valve, you just want the electric to be a lift pump so it should be mounted as close to the fuel tank as possible. It just seems strange that it would be running the two pumps when if the system is good it should only require the one mechanical pump or one electric pump, but not both.

30

The electric is in the tank n I tried removing the mechanical pump but gave the same results

1 of 1 people found this helpful.
104,315

This car should have had a 5.0 liter injected engine, so the pump that is in the fuel tank is a high pressure pump, and if it is working properly it would blow the internals of the mechanical pump and totally flood the carb with fuel, so what you have too do is remove the electric pump and make up a pickup tube with a screen on the end that will go to the bottom of the fuel tank, using copper tubing and having it sweated on the pipe where the fuel pump usually was attached is about the best way too do this, and RV screen can be used on the end, then replace you mechanical pump with a good one like accel or similar and your problem should be gone. HTH

104,315

Oh forgot, you will have to do away with the large inline fuel filter, it was designed for a high pressure system and a machancial fuel pump will have a problem drawing through it, you can however replace it with a clear motorhome filter as those were designed for low pressure systems and can be drawn through easily.

30

Ok that makes perfect sense but seems complicated, the carb has been flooding to the point it won't crank anymore. But thanks I'm try that

104,315

If an engine gets that badly flooded the fuel goes around the rings and into the pan, this can cause an explosive situation that can blow off the oil pan and the valve covers, so while your working on this you should remove the spark plugs, drain the oil and leave the drain plug out, remove the oil filter and let it stay that way until your ready to run it, then new oil and filter, reinstall the plugs unless they are totally fouled then replace them also. Good luck.

1 of 1 people found this helpful.
Best Answer Mark helpful
30

Ok thank you very much!

30

One more question please, I was thinking about adding a fuel pressure regulator to the electrical pump to convert it to 5-9 psi, how would you recommend that or will that be too much pressure

104,315

I haven't seen a fuel pressure regulator for automotive use that can handle that kind of pressure, but they arfe coming up with new stuff all the time, you might try Summit racing.

30

I read up on it on eBay but doesn't give any conversion info, I'm try and dig deeper into it

Your Answer

Camaro

Looking for a Used Camaro in your area?

CarGurus has 31,741 nationwide Camaro listings starting at $1,450.

ZIP:

Chevrolet Camaro Experts

  • #1
    dandyoun
    Reputation
    1,760
  • #2
    carGrrl
    Reputation
    1,200
  • #3
    Tom Demyan
    Reputation
    1,090
View All

Related Models For Sale

Used Ford Mustang
567 Great Deals out of 36,996 listings starting at $2,595
Used Chevrolet Corvette
176 Great Deals out of 18,597 listings starting at $3,941
Used Ford F-150
2,924 Great Deals out of 215,433 listings starting at $1,295
Used BMW 3 Series
1,081 Great Deals out of 34,196 listings starting at $1,000
Used BMW M3
30 Great Deals out of 2,093 listings starting at $6,599
Used Jeep Wrangler
440 Great Deals out of 19,053 listings starting at $2,990

Used Cars For Sale

2018 Chevrolet Camaro For Sale
9,349 listings starting at $19,430
2017 Chevrolet Camaro For Sale
151 Great Deals out of 9,426 listings starting at $17,799
2016 Chevrolet Camaro For Sale
47 Great Deals out of 1,376 listings starting at $16,995
2015 Chevrolet Camaro For Sale
97 Great Deals out of 2,593 listings starting at $12,999
2014 Chevrolet Camaro For Sale
70 Great Deals out of 2,292 listings starting at $11,616

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.