transamws6_97

iTrader: (5)

Okay I finally got around to testing my fuel pressure. I thought it might be my fpr but after pulling off the vacuum line and there being no smell of gas I went ahead and tested the pressure. I have 46 psi upon priming...as soon as i turn the key back off tho it drops straight to 38 psi and the quickly (like 15 seconds) drops down to 0. Is that normal to drop that quick after you turn the key off. I didnt get to test the pressure at wot because the hose wasn't long enough to get the gauge to my windshield. Also I do notice that if my car has been sitting for an extended period of time I have to prime it twice to get it to start up quickly or else if I dont it will just crank for 5-7 seconds before it fires up.

2XR95Z28

iTrader: (4)

going threw the same exact problem right now except mine will flash to 40 or 50 psi right away (priming) then down to nothing within a few seconds. I'm replacing the regulator today, I also checked my injectors lastnight and none of them seem to be leaking.

If anyone else has any ideas let us know! I will let you know if the new regulator (comes in today) fixes it.

transamws6_97

iTrader: (5)

good deal...yeah I figure either my fpr is just letting all the fuel go back the return or my injectors are leaking im hoping its just the fpr

2XR95Z28

iTrader: (4)

Ya i have replaced my pump twice, checked my injectors, so this is about the only other thing it could be besides a hole in the lines somewhere but i'm not leaking anything so i dont think that'll be it. As soon as the stupid fedex truck gets here i'll try to get it on before work and see if it fixes it and post back.

ss.slp.ls1

iTrader: (36)

Either your check ball in your pump is bad, you have a bad fpr, or you have leaky injectors.

Low N Slow

iTrader: (4)

I had a very small hole in the hose from the pump to the metal line coming out of the tank. It acted just like yours. I found it by removing the bucket and pressurizing the line, it was a very small hole in a new hose from Racetronix.

2XR95Z28

iTrader: (4)

i checked my injectors, new pump, so its gotta be either the regulator or i got another bad pump, if the regulator doesnt fix it tonight i'm returning the pump and gettin a walbro 255 with the racetronix kit.

2XR95Z28

iTrader: (4)

Well it still does it, now even worse... Before it would turn over and run decent now it will barely start and dies after a few seconds... I'm lost and starting to get real pissed, any other ideas guys?

transamws6_97

iTrader: (5)

hmm yeah i was hoping it was the fpr since thats the cheapest of all the fuel parts but i doubt its fpr for me either since i pulled the vacuum line off and there was no fuel smell

2XR95Z28

iTrader: (4)

gonna get the gauge on there tomorrow and see if its still loosing all pressure. Next on my list is double check everything on the fuel pump, if everything is still good and still no luck, i'm puttin in a walbro, this is pissin me off, i wanted to race this friday and once again i get screwed lol.

97lt1camaro

iTrader: (3)

+1.

Same thing with my factory pump. Had a hole in the feed line going to the metal lines.

Symptoms were exactly the same as your describing.

transamws6_97

iTrader: (5)

so then whats the best way of going at this? Should I cut a hole in my hatch area for the fuel pump and take it out and look or how would I be able to tell if I had a hole.

2XR95Z28

iTrader: (4)

Your going to have to cut a hole and take the pump out to check the lines they are talking about. I'm gonna take mine back out tonight and check the lines and all that again and see if i can't find anything. I just replaced the pump too thats why this doesn't make sense to me...

2XR95Z28

iTrader: (4)

Well i put in a 255 pump in tonight and she starts right up now, I have had a few stumples since then but NOTHING compared to what it was doing before. I def say you gotta replace your pump man, like i said i checked the injectors and replaced the regulator and didnt have anyluck, put a good pump in it and works 100x's better...