why does my truck want to keep running when i shut it off?

Asked by Apr 08, 2017 at 05:40 PM about the 1981 Chevrolet C/K 10 LB 4WD

Question type: Maintenance & Repair

sometimes my truck will try to keep running for a few seconds and at other times it will spit and sputter for 15 seconds.

1 Answer


It has to do with a lot of carbon build up on the pistons and valves. The carbon gets super heated like a piece of charcoal and keeps burning the excess gas that is left over. Timing can have an affect on this if it is too far advanced.

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