BlackCRX

boosted stock y8
stock fpr/rail, dsm 450's, walbro 255 intake

i noticed that now when i prime the motor the fuel gauge shows 0psi
when i start the car it shows and stays at 40psi
i pull the vacuum line from the stock fpr and it raises to 50-51psi
so this leads me to think that the fpr is ok right?
when i shut off the car the fuel pressure drops instantly

i remember before i would prime the fuel system and it would hold at 40psi, and when i shut off the motor it would hold fuel pressure at 40psi for some time before going down

i asked another friend he was saying it has to do wi the walbro fuel pump and the return valve
my friend suggested i should replace the pump, but alot of other ppl i have talked to with walbro;s have the same problem and they just ignore it

since i own a crx i really dont want to drop the tank to get to the pump, but at the same time will this cause a problem holding stable fuel pressure under boost?

thanx for everyones help

BlackCRX

anyone?

trickeng

do you hear the pump turn on before you start it?

BlackCRX

yup, the pump whines like a bitch when i prime it