c.krutzler
New member
Underway my port engine runs fine up to 1500rpm then dies from fuel starvation. I have replaced all filters, primary and final as well as the mechanical lift pump and checked all lines from the pickup in the tank to the injection pump and found no leaks. Engine still dies under load. To get it started again I have to bleed air out of the fuel lines. At the dock I have checked both the vacuum side as well as the pressure side of the lift pump and found that the lift pump will pull vac to the red zone on the raycor gauge and outputs pressure at 7psi at idle (550rpm) but drops to 0psi at 1500rpm. should there always be pressure on the output side, at all rpm's? I have bypassed the lift pump with a temporary electric pump and only loose 1psi at WOT, 23 vs 24 psi. What is going on? I have run out of ideas, any help would be GREATLY apreicated.