Lately every once in a while it will take 3 starts to get the car started, hot or cold..last year the fuel pressure regulator was at 21psi and now it is at 27psi.. (when testing my spare regulator it to comes up at 27psi)..when turning off the motor the pressure needle drops immediately to 20psi and will stay there pegged...is this normal or are both my regulators worn out...also forgot to mention that I am useing a loyale turbo fuel pump for my spfi conversion..

Edited June 29, 201213 yr by Petersubaru

have you looked into how much pressure you should be getting?

 

here are some numbers from someone else that look about like yours:

http://www.ultimatesubaru.org/forum/showthread.php?t=4581

have you looked into how much pressure you should be getting?

 

here are some numbers from someone else that look about like yours:

http://www.ultimatesubaru.org/forum/showthread.php?t=4581

... Thankyou..the starting problem was probably related more to the idle air control circuit..I did find that it did not seal well when closed and was full of carbon... also the spring inside was difficult to move..starting good now..with the the fuel pump I will leave as it is for now..it runs smooth with no lag and the plugs are clean...

even if my car starts at the moment with no problem..still could have something to do with the fuel pump check valve..I don't think it should drop from 27psi to 19-20 psi as soon as it is turned off ..perhaps at other times it still drops even lower ...

..just a followup..there was some restriction in the return hose and now fixed..fuel pump static test and residual are at 24 and 22psi...time will tell about the condition of the "check valve" since it could take hours for it to bleed down...so far so good..