Excessive Odors - Fuel, Emissions

Vehicle has excessive "rotten egg" smell. Raw fuel (gasoline) can be smelled. Excessive odors do not necessarily indicate excessive emissions.

POSSIBLE CAUSE ACTION


Faulty purge valve, liquid Check Evaporative system. See
fuel in carbon canister, EVAPORATIVE CONTROL SYSTEM in
fuel tank vent system blocked, TESTING PROCEDURES.
poor seal on gas cap



PCV valve plugged or stuck Check PCV system. See POSITIVE CRANKCASE
[1][2]PCV hose blocked or plugged VENTILATION SYSTEM in TESTING PROCEDURES.



Contaminated catalyst Check for missing or worn
fuel fillpipe restrictor.




Excessive Emissions Refer to HIGH EMISSION LEVELS.
See DIAGNOSIS BY SYMPTOM.