Lift pump pressure

[rdodd]

I had a shop check my valve clearance yesterday and while i was there i had my lift pump pressure checked. They removed a plug above the lift pump, installed gage and pressure at idle was 5-6 pounds. Pressure seemed to stay about the same as they revved it up a little. Does this sound about right? They seemed to think it was about normal, but i thought it should be a little higher.

 

[Greenleaf]

Good pressure at idle and high idle (no load). The real test and proper method is to load the engine down and make a check of the fuel pressure. However this is seldom done as it's a rule of thumb to simply perform the test as you mentioned. You don't want to see below 3 psi at WOT under a load. A performance engine can benefit from much higher pressures



-S