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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Dieseling/Run-on






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

CAUSE (BY SYSTEM/COMPONENT):

ENGINE MECHANICAL
- Excessive engine temperature

FUEL SYSTEMS
- Fuel injector leak.
- Incorrect idle speed.

IGNITION SYSTEMS
- Incorrect ignition timing.