Fuel Smell on Cold Start in 2020 Ford Explorer
A gasoline/fuel smell during cold start in a 2020 Ford Explorer typically indicates a fuel system leak or incomplete combustion. This can be caused by a leaking fuel injector, a faulty purge valve in the EVAP system, or a loose gas cap. The smell is most noticeable when the engine is cold because the fuel system is under higher pressure and the catalytic converter hasn't warmed up to burn off excess fuel vapors.
Diagnosis Details
Possible Causes
Leaking fuel injector (dripping fuel into cylinder or externally)
Faulty EVAP purge valve stuck open (allows fuel vapors to escape into intake)
Loose or damaged gas cap (allows fuel vapors to escape near filler neck)
Related OBD-II Codes
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What You Should Do
Check for fuel leaks around injectors and fuel rail.
Inspect the gas cap for proper seal.
Have a mechanic test the EVAP purge valve and perform a fuel pressure test.
Do not drive if smell is strong or accompanied by visible leaks.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
