Occassional hard start after sitting.

[doctorx69]

I finally have been able to drive the car now on a regular basis. Seems like there is no fuel pressure when i first try to start. If i put the key in and immediately try to start, it just cranks. However, if i turn the key to on for a sec or 2, it starts every time. New pumps and gas tank. No issues once running. Is this the fuel pressure regulator or is it something else?

[superj]

it sounds like that check valve, which sucks because you just put a new pump and all the other stuff in. unless your regulator is leaking down but I think you checked that previously

[doctorx69]

where is the check valve located? cannot find it on realoem. everything behind the absorber back is new in the fuel system.

[superj]

Its in the fuel pump

[doctorx69]

brand new pumps.... so that would not be it.

[superj]

that's why I say that it sucks. I don't think its the regulator since it runs fine. I don't know since its only occasionally, it could just be something dirty or sticking and then it works itself clear for a while. its hard to say with that type of stuff

[doctorx69]

what are the symptoms of a bad fpr?

[superj]

can be hard start. can be won't idle. can be rich running condition. can be a number of things.

take the little hose off the end, but the end at the intake. it should hold a seal if you put it in your mouth and suck on it like a straw. it should stick to your tongue if its not leaking when you suck on it and cover the end with your tongue. quick easy check for the diaphragm to be good

[doctorx69]

ok... ill check and get back to you.

[doctorx69]

it kinda holds vacuum... but taste gas vapor... I am guessing it hasnt failed, but in the process. Time to order new one i guess.

[doctorx69]

one thing about the pumps i did notice though... if i prime them or jumper at the relay, the main pump does not sound like it is starving. I dont think they check valve is the problem. Leaning towards the fpr as the issue.

[superj]

One way to find out

[doctorx69]

got the new fpr installed. Just tried it after it sat for a few hours. I didnt wait until 2 secs like i did before starting. Started right up. I hope this fixed it.

[superj]

Me too

[doctorx69]

update. I went away for vac and when i got back 1.5 weeks later, it started right up. So the fpr was bad ... whowouldhavethunkit? Thanks for the help.