So first off, I'll admit I'm not a mechanic, I'm just a random guy in love with the look of third gen Camaros. I got a 91 camaro a while back, and ever since I got it it's had strange fuel problems.

It's a 91 Camaro RS, the original 305 was swapped for a 350. They removed the original fuel injection and put a carburetor in its place. As far as I know, you can't have the stock fuel pump if you do a carb swap due to the high fuel pressure the original pump creates, so they added a universal in-line fuel pump, linked here http://shop.advanceautoparts.com/p/m...-42s/5400317-P.

When I got it, I drove it around a few places, turned it off a few times, it cranked up perfectly every time, ran awesome. If I tried to get close to flooring it, it would sort of bog down, it wouldn't die but it would take a second to catch up. I took it home, parked it out front, woke up with a grin on my face and ran outside to drive it, turns over but it won't crank. I have it towed to a place where we can look at it.

It has a clear fuel filter under the hood before the carburetor. I could see that it had fuel in it. I took it off and emptied the fuel out of it, and it did not fill back up once I turned the key on, even though I could hear the pump running. I took the line off at the fuel pump out (the end going towards the carb) and stuck the end in a jug, turned the key on and it shot nothing for a second, then it started shooting fuel. This maybe wasn't the smartest idea, but I wasn't sure what else to do.

I hooked the line back up, made sure everything was in place, turned the key on, and the fuel filter filled back up, and the car cranked like new.

Every time I go to crank it now, after sitting overnight or so, I have to do this. I've replaced the fuel pump with a new one of the same variety, and still the same exact thing. I'm thoroughly stumped. If anyone has ever experienced this or has any idea what it could be, I'll try whatever you say within reason. Thanks

 

Welcome aboard thirdgen.org.

That's not really true. You can use a regulator that drops the fuel pressure to the carb by returning excess fuel back to the tank. They are a little more expensive than the "normal" fuel pressure regulator that just stops the fuel flow when the proper pressure is reached, but the stock in-tank pump needs constant flow in order to keep from overheating, so a return-type regulator is required.

Where was this Mr. Gasket electric pump mounted? If not back by the tank, that's a problem.

Do you know if the original in-tank pump was removed? Disabled?

I'd guess that the original in-tank pump was just disabled, and that poor Mr. Gasket pump is trying to suck fuel through it - not an easy task, even for a good pump.

I'd suggest getting the in-tank pump running, using a return-type regulator up by the engine, and giving that Mr. Gasket pump a good stress-relieving heave as far as you can throw it.

 

Oops, wrong post.