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please someone i need to know i have a 1998 cavelier once in awhile i smell gasoline i will go start my car no smell. then i go get gas. so i take a ride .then stop at a store when i get back in and start it. i can small gasoline.there are no leaks. what could be the cause of this and the weather is hot and humid right now thanks so much
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Lynn, I would look under my car after I shut it off to see if anything is dripping. Also check your tail pipe and see if the smell is coming from there. Next I would take it to an AutoZone and get a free computer diagnostic to see if it is reporting anything.
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Wouldn't hurt to check. +
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I believe the charcoal canister is responsible for dealing with gas vapors Check your EVAP vent valve. It controls fresh airflow into the EVAP canister. It may be closed, should be normally open. Definitely check all hoses that go to your charcoal cannister and make sure they are working and not cracked and/or loose. You may be due for a canister replacement and an evaporative emission system cleaning. Good Luck and let us know if any of this helps you out.
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In both my 2004 Caviler and my 2005 Colorado P/U I get the same occasional odor. Problem only seems to happen with gasohol in the tank. Wonder if the alcohol is somehow passing through the filter easier? When it happens it only happens when starting and just for a few seconds. +
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If there are no spills on the ground than that means any leaks that might be present are very small, and the gasoline that leaks out is evaporating, which is what you're smelling.
Answers.com has a very good reply to a similar question:
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Check the gasket on the fuel fill cap. They crack with age and may be allowing vapors to escape as the fuel expands in the tank. This can also cause the check engine light to come on.
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Could be a fuel rail leak on the line that supplies gasoline to the carb. you may not see liquid as it will evaporate on top of the hot intake.
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doesn't have a carb
take oil filler cap off and check if petrol smell is there. if there is petrol in oil then big problems will come ( oil will be more fluid and not pump everywhere, leading to big end failure). might be leak in petrol pump.
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Mine was a fuel pressure regulator fpr for short. I had a couple of cups of raw gas in the air intake, the bad fpr cause fuel to go in the air intake which cause a gas smell. $70 at O'Reilly.
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