I've been battling an issue where after driving for a while (maybe 5-10 minutes), my engine starves and dies. Then I just need to let the pump run for a few seconds and I can start the engine again and it will run for a while longer. It doesn't seem to be related to car orientation (going up or down a hill). First, I: removed and cleaned the tank replaced the pickup sock (it had broken off inside the tank) replaced the fuel pump (Mr. Gasket 4-7 psi micro pump) replaced the fuel filter before the carb After all of that, the engine would still starve after some driving. I figured it was a constriction in the line, so I replaced the whole fuel line from the pump to the carb. Didn't fix the problem. So I added a fuel pressure gauge just before the fuel filter and found that I'm only getting 1 - 1.5 psi of pressure. My filter has a fuel return output, and when I block that, my pressure climbs to 4 psi, but I can't imagine that is what is causing my engine to starve. When the engine starves, my pressure gauge reads 0 psi. I'd really appreciate any suggestions. I'm out of ideas!
It's electric and it's mounted in front and above the tank. It's mounted at a 45 degree angle as per the instructions
I really wonder about that fuel pump. Should have more pressure than that. I would also do a flow test on it.
I think this may be your problem, the pump is not designed to suck fuel out of the tank and push it to the carb. Try moving your fuel pump below the tank so its a gravity feed to the pump and only pushing to the carb. Do quick search on here and you will see some pictures of where most guys mount there electric fuel pumps.
your pump just may not be strong enough if its just a cheap electric. i had to upgrade to a big holley because it wasn't pushing enough fuel (i think my pump is located same as yours the way you described) its on the side of the trunk where it dips down above the tank. and say they stated with the sucking of a pump..that has to do with it also but its not like you have it up in the engine bay.
That pump is fine, but you need to mount it below the level of the tank. I'm running the same pump, mounted on the frame rail forward of the front of the rear spring. I also have an inline filter between the tank and pump (just upstream of the pump) This pump is more than enough flow to feed my 400+HP 331 with three 2 bbl carbs at WOT both thru the 1/4 mile and at topend on the open road (don't ask where or how fast ) The only time it falls short is when the inline filter gets plugged, at that time I know when it's time to change the filter.
i dont understand why your fuel filter would have a return outlet on it. that is most likely your problem. what fuel filter are you using? where does the return out let hook up to?
X3, I missed the part about the return outlet. It's not needed nor a desired feature with a low pressure pump. You're loosing half your flow without it capped.
I just lowered the pump to just about the level of the pickup (any lower and I would start to get nervous.) My pickup tube is lower than the frame rail, so for a temporary solution, I had to mount it to a bracket and hang it down. But the engine still dies anyway. As for the fuel filter, this is the model (Fram 3583): [ame="http://www.amazon.com/FRAM-G3583-In-Line-Fuel-Filter/dp/B000AMW0F6"]Amazon.com: FRAM G3583 In-Line Fuel Filter: Automotive[/ame] That was the setup when I purchased the car. Would you suggest simply not using my return line at all, then?
mavericks never had a return line stock. i dont know what your return line goes to but that is where all your fuel is going to. just put a normal fuel filter with a 3/8s inlet and outlet and that will do the trick. make sure that return line wont let fuel slosh out of it.
