fuel pressure #

[Legoinry]

hi i searched the forums and didnt really find anything to help me out ive also searched the web for the info what im looking for is what should and sr's fuel pressure be at when its idleing i have a FPR and will be dropping my motor in this weekend

[whistles]

mines at 4 but then im runnin a little rich post up tomorrow morning a better number.(cars real loud) i love my apexi gt

[positron1]

I got this info off here some time ago when I was researching parts for my engine....Fuel Pressure Regulators (FPR) are to be set to 43.5 psi with the vacuum source hose unplugged from it. With the hose plugged in, the regulator should read 36 psi. Aftermarket fuel pumps tend to force an old, tired regulator to run higher pressure. A Walbro 255 lph fuel pump has been shown to consistently run stock FPRs at 43 psi with their vacuum sources plugged in. This will result in a slightly rich condition, which doesn’t affect drivability or performance. It does seem to adversely affect injector life, however.

[whistles]

I got this info off here some time ago when I was researching parts for my engine....Fuel Pressure Regulators (FPR) are to be set to 43.5 psi with the vacuum source hose unplugged from it. With the hose plugged in, the regulator should read 36 psi. Aftermarket fuel pumps tend to force an old, tired regulator to run higher pressure. A Walbro 255 lph fuel pump has been shown to consistently run stock FPRs at 43 psi with their vacuum sources plugged in. This will result in a slightly rich condition, which doesn’t affect drivability or performance. It does seem to adversely affect injector life, however.

nice was just going to post 43 psi i hate my naighbors