Why would there be a faint smell of fuel when the air conditioner is on?

Answer

Check your muffler and exhaust pipe for holes and also check your manifold gasket it may need replacing, exhaust fumes smell like faint fuel, if there is not leak this could be the problem.

Answer

This could be caused by a few different things....check the purge canister if the vehicle has one.....also check the fuel pressure regulator for a leaking diaphram.The air conditioning is "sucking" the fumes in from the purge canister or the pressure regulator.

Answer

Any fuel leak in the engine compartment can transfer into the cabin when the a/c is turned on. I doubt the exhaust would be confused with fuel but that's just my nose. Some vehicles have common recall problems such as the intrepid for fuel rails leaking.

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First answer by anonymous. Last edit by Bclear. Contributor trust: 1371 [recommend contributor]. Question popularity: 132 [recommend question]

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