Charlied
Well-Known Member
Seems fuel bowls are dry on cold starts and restarts after a few hours.When cold have to crank for 8-10 seconds to fill, then it starts quickly. Holds steady idle (1000 rpm) and NOT running rich.
No evidence external leak. So would think an internal leak, but plugs are clean and given not running rich doesn’t support fuel leaking to intake.
Did a complete tear down and rebuild following Rocky’s road show about a year ago (excellent) and replaced gaskets in needle and seat location as well as those at the bottom of fuel bowl. I was meticulous.
Don’t think fuel can evaporate that fast.
Tested by starting cold and as soon as it was running shut it off (so fuel in bowl) left it overnight. Next morning pulled air cleaner manually pulled throttle 2-3 times watching the squirter, no squirt so bowls are empty, and since no real manifold heat with quick start and shut off think that eliminates evaporation. Stumped.
Any suggestions well appreciated. Thanks
No evidence external leak. So would think an internal leak, but plugs are clean and given not running rich doesn’t support fuel leaking to intake.
Did a complete tear down and rebuild following Rocky’s road show about a year ago (excellent) and replaced gaskets in needle and seat location as well as those at the bottom of fuel bowl. I was meticulous.
Don’t think fuel can evaporate that fast.
Tested by starting cold and as soon as it was running shut it off (so fuel in bowl) left it overnight. Next morning pulled air cleaner manually pulled throttle 2-3 times watching the squirter, no squirt so bowls are empty, and since no real manifold heat with quick start and shut off think that eliminates evaporation. Stumped.
Any suggestions well appreciated. Thanks