New option for fuel pump replacement

[Paul Workman]

Pardon me for "axing" a dumb question, but is that 54# reading with or without the engine running??? If you jump the pumps with the engine not running, that would be one thing. But, with the engine running, the fuel pressure regulator should be clamping it at around 50-52, no? 54 seems on the high side, to me.

P.

[tomtom72]

Sorry, that 54 psi is a KOEO reading.

Yes, with the motor running the psi goes down to a reading of 50 psi at idle speed. I just figured that if I see 54 psi doing the KOEO test & a 50 psi at idle speed that she's good to go?


Tom

[Paul Workman]

Originally Posted by tomtom72

Sorry, that 54 psi is a KOEO reading.

Yes, with the motor running the psi goes down to a reading of 50 psi at idle speed. I just figured that if I see 54 psi doing the KOEO test & a 50 psi at idle speed that she's good to go?


Tom

Ah! That makes sense now.

P.