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Home >> Jaguar >> 1992 >> XJ-S V12-5.3L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Run-on/Dieseling

Run-on/Dieseling

When ignition is shut "OFF," fuel system power is also cut. While this makes it highly unlikely that run-on will occur, the following components could leak enough fuel to cause the problem:

^ Leaking fuel injector
^ Leaking fuel pressure regulator diaphragm