Carb Problem

[SkiLew]

Has anyone had a problem with their engine wanting to idle too high after it has been run real hard.

I Have a 1993 351 engine with the standard Holley Carburetor. Sometimes after I have run the boat really hard the idle rpms will be so high that I am afraid to put it into gear for fear of damaging the transmission.

If I shut the engine off and let it sit for just a minute or two and then restart the engine, it will usually idle normally.

Again this only happens when it has been operated at nearly full throttle conditions.

Any thoughts?

[buckwyatt]

having the timing advanced too far will cause that. You can retard the timing by hand, just a little, until it runs better, or check it with a timing light. My 1988 still has breaker points and yours might as well.

Make sure the choke is operating freely, maybe clean up the carb with spray-carb-cleaner