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.
- Check injector(s) for leaking. Apply 12 volts to fuel pump "test" terminal to turn "ON" fuel pump and prime fuel system.
For a single tank system, see CHART A-5. Chart A-5 Fuel Pump Relay Circuit Diagnosis (One Fuel Tank)
For a dual tank system, see CHART A-5A. Chart A-5A Fuel Pump Relay Circuit Diagnosis (Two Fuel Tanks)
- Visually check injector and TBI assembly for fuel leakage.