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Name:	Beekeeper Tony -	Reply
Subject:	Dieseling after shutting engine off
Date:	10/5/2013 3:22:02 PM

ok, I completed my carburetor rebuild and it runs great (except a little high idle I'm going to work on). I have had this problem forever with dieseling after shut down. I have read several articles on this but, not sure how to approach it.

Bottom line is when I cut the key off it wants to continue to run.

Any thoughts, point of attack?

Thanks.

Name:	GoneFishin -	Reply
Subject:	Dieseling after shutting engine off
Date:	10/5/2013 5:58:52 PM

Maybe due to carbon buildup. Look up Sea Foam as a possible solution.

Name:	Beekeeper Tony -	Reply
Subject:	Dieseling after shutting engine off
Date:	10/5/2013 7:07:03 PM

I think that's going to be my first plan of attack once I get the idle down. Its always had this problem but after rebuilding carb I was hoping it would go away. If it doesn't rain tomorrow I hope to go out and work on it some.

Thanks for responding. I let cat do my big jobs but, gotta save money when I can.

Name:	HP HQ -	Reply
Subject:	Dieseling after shutting engine off
Date:	10/6/2013 10:49:05 AM

A high idle can create a dieseling effect but 99% of the time this is caused by a lean idle situation. Depending on what carb you have, try opening the idle mixture screws about 1/2 to 3/4 round each, the idle should drop at this point, then turn the idle screw down to a respectable idle speed, and see if your problem doesn't go away!!

Name:	Beekeeper Tony -	Reply
Subject:	Dieseling after shutting engine off
Date:	10/6/2013 3:41:22 PM

Thanks,

Idle mixture has not been adjusted since I rebuilt carb, I will try that also.. My brother in law said run only 91 Octane fuel.

Name:	Shortbus -	Reply
Subject:	Dieseling after shutting engine off
Date:	11/5/2013 9:23:57 AM

Mr. Mayor,

All GM v6 4.3 boats diesel forever. Its normal. Just get a beer and it will still be running when you're done.

Keep out ethanol, keep in stabil, and DRAIN THE BLOCK and MANIFOLDS for winter ..............

Name:	Shortbus -	Reply
Subject:	Dieseling after shutting engine off
Date:	11/5/2013 9:25:25 AM

and shifting the transmission over 800 rpm breaks things

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