Dieseling/Run-On

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

PRELIMINARY CHECKS
Perform the careful visual / physical checks as described in Diagnostic Notes. Refer to Diagnosis By Symptom / Preliminary Checks. Testing and Inspection

FUEL SYSTEM CHECKS
^ Injectors for leaking. Refer to Diagnostic Charts / A Charts / Chart A-7 Fuel System Diagnosis. Related Tests, Information and Procedures
^ For excessive fuel additives (high percent of alcohols).