Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Dieseling, Run-on


SYMPTOM DESCRIPTION:

Engine continues to run after key is turned "OFF", but runs very roughly.
If engine runs smoothly, check ignition switch/adjustment.


POSSIBLE CAUSE ACTION


Spark plugs - Check for proper heat range and gap.


Ignition Timing - Check distributor indexing.


PCM - Check for excessive spark advance (may cause high cylinder temperature). See,