Dieseling/Run-On

DIESELING, RUN-ON

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

PRELIMINARY CHECKS
Perform the careful visual/physical checks.

FUEL SYSTEM
- Check fuel injectors for leaking. Refer to Chart A7-B Chart A-7B Fuel System Pressure Check and On-Board Diagnostic System Check. Testing and Inspection
- Check for excessive fuel additives (high percent of alcohols).