Fuel pressure

[93captiva]

When I shut my car off i lose fuel pressure almost right away according to my fuel pressure gauge. Go to start it again and it wont start. anyone got any ideas.

mods
b18c
walbro 255 pump
aem fuel rail
aem regulator
fuel gauge on rail car runs at 50lbs of pressure
car was tuned by DRT in NY

[horny_for_hondaZeg888]

1. dont run 50psi
2. there is a air or fuel leak
2a.check fuel pressure guage check for leaks around the threads or just remove and re teflon tape it
2b.check return line though whole car
2c."O"-ring on fpr might be shot
2d.injectors are not in all the way loosen the fuel rail and tighten evenly

try those if non of the above get back to me

[godspeedcrv]

Wow all of those steps/problems could be it.

Personally I just bought a FPR from AEM and had to send it back because of the internal diaphram was messed up. It was throwing fuel back through the vaccum line and filling up my intake manifold and intake.

How long ago did you have it tuned? You prolly should bring it back before any issues popup. Carry a fire extinguisher with you just in case papa.

Oh yea and 50psi is too high. First red flag. And go ahead and get some bigger injectors if you haven't already.

[jrsc_b18c1_12psi]

agree with both posts here but got one issue you cant use teflon tape on gas the tap will just turn to mush the moment gas hits it if you are leaking from a seal that cant be fixed by tightening it up get some plumbers putty and use it sparingly cause it will make a mess

[horny_for_hondaZeg888]

i never have a problem with teflon tape

[93captiva]

5o psi is what a type r runs for fuel pressure and i got the car tuned about 8 months ago i am going to try to re teflon tape again i thought i was getting air from somewhere. i will post my results when i get to work on the car just got no time just yet thanks everyone

[sleepywonderek]

it could as be a bad pump it could not be holding pressure they do go bad