Fueling Problems - Is My Logic Correct?

[SolidState]

Hey Guys,

MY ATX has been acting up a little lately. Early moring starts aren't a problem, but if I shu t it down, then go to start it up 30min to 2 hours afterwards, the car really struggles to idle....it sputters, stalls, and there is a gurgling sound coming from the fuel pump.

As well, the car seems to be running excessively lean. Not bad enough to throw any codes, but the cars feels 'raspy', lacks a little power, and heats up rather quickly. The intake is solid; no leaks. I have tried two different MAFs. O2s are new.

Some days it runs fine, but the problem is becoming much more frequent.

What I am thinking is the the fuel pump is failing and cause fuel starvation at times. Am I on the right track? Everything else for a 60k has been done save the timing belt and valve lash.

TIA

 

[AutoSHO]

Did you change the fuel filter already? If not, I'd do that first. Otherwise, I'd say you're on the right track. I would also check the fuel pressure.

 

[SHOtimer]

It sounds like your fuel return line check valve.
Doug

 

[SolidState]

fuel filter is newish....don't think it is that, but would be an easy fix.

I think the check valve is invloved somehow...

 

[AutoSHO]

My check valve makes a gurgle especially in warm weather, and it makes an extremely weird yelping noise at idle. I gotta get that tank out and replace it and the fuel pump.