I have a 4.3L in a 2002 Campion Allante with unknown hours on it. Last year it started to occaisonally run on after the ignition is shut off. Now it does it all the time. By running on (dieseling) I mean the engine with fire on one or more cylinders on it's own. I usually flick the ignition on and off quickly until it finally quits. When it does it lets out a big wheezing sound and there is almost a sweet fuel type smell. Weird, I know!
Mercury says to idle the engine for a few minutes after coming back to the dock. That helps a bit but doesn't eliminate it. Boat was tuned up and the coldest AC Delco plugs available put in (Mercury recommendation).
Any suggestions?
Mercury says to idle the engine for a few minutes after coming back to the dock. That helps a bit but doesn't eliminate it. Boat was tuned up and the coldest AC Delco plugs available put in (Mercury recommendation).
Any suggestions?