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what spark plugs?? Want to stop run-on at shut down

December 4 2017 at 8:49 PM
John  (Login MaSnaka)
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I have a new 445 build which I just started and drove for the first time two weekends ago. Edelbrock heads near 11CR. Im using the Autolite 3924's and I have run-on when I shut down the engine after a drive. Is this because I need a different spark plug? I was using these in my 390 same heads with the same problem. Or is this a timing issue? My initial is at 16 with a vacuum advance plugged. I'm not sure what causes this.

Thanks,
John

 
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