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Mercruiser (2003) 3.0 Liter Shut Off Problem

Johnsislandboy

New member
Motor will not shut down after high RPM and sometimes even at low RPM's. I am aware of most issues associated with this but cannot seem figure it out. The dieseling can obviously be caused by numerous issues. So far I have eliminated the back feed from the alternator (by simply eliminating it all together), adjusting the idle mixture, and adjusting the timing and nothing has worked. Thinking of cleaning the carb but the motor runs too good to want to break that thing down! Any help is greatly appreciated!!! [h=3][/h]
 
1. What is the timing set at?
2. What is low rpms?
3. What is idle rpms?
4. What temperature is the motor running?
5. What carb is on it? Mercarb or TKS carb?
 
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