northern_lights
Member
Once again....I am back to a fuel starvation issue??? To recap....twin 1986 454's We identified the possible problem last time to running Micron 2's instead of 10's. That seemed to fix the problem. (10 hrs running no issues) However, my most recent outing. The same freakin situation. With full fuel tanks....run for 2 hrs at 2500 rpms. (no problems) on the return leg at about 1 hr into the run....the Port engine stalls. I restart and nurse the rpms to 1500 back to home harbor. I have installed a vacum guage on top of the Racor 500's and it definately went into the red. (5-7 is normal and it popped up to 13) It would stay just out of the red (10) at 1500 rpms. I don't believe I have a fuel vent issue...it seems good. I had the fuel tank polished as I thought maybe a loose piece was clogging the fuel pick-up tube. Could the anti-siphon valve be sticking...would that cause intermitten issues??? Should I replace the fuel lines....they are old...but don't look cracked or horrible on the outside. I did not switch on the cross-over valve this time. (did not think of it at the time) Finally I did pull the filter with 10 hrs on it and it looked fine. I am stumped. Any thoughts....you guys have always batted a 1000 of the rest of my issues.....but this is starting to feel like a swing and a miss.