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2002 Pontiac Grand Am Question: Smell gas fumes when idling and after you turn engine off.

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Cindyrellasue, V6, Kevil, KY, February 25, 2009, 13:41

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I began smelling gas fumes around Xmas last year when the car would idle at stop light etc. It also smells really stong when you turn the engine off. My brother is a mechanic and he can't find any gas leaks at all and can't stand being stupped. Gas mileage has been down but it's cold and I warm the engine up sometimes. The gas cap broke around Xmas and I replaced it. I have an appointment to run a smoke machine on it.

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Answer #1

hemicuda February 25, 2009, 14:18

Master

Smelling fuel is an indicator of a fuel leak and should be treated very carefully.dont smoke or do anything like that while you are around the car doing diagnostics. check your fuel pressure regulator (round thing) which is to the right front of the piece that says 3400 on it (upper intake). There is a vacuum hose on top of it that you can pull off and smell. If you get a very strong odor of gas (or see any gas) when you pull the line off then the diaphragm inside is broken and the regulator needs to be replaced. $56 at http://www.parts.com/ $106 at Napa

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Cindyrellasue, February 25, 2009, 14:36

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I called my brother and he said that is one thing he didn't check. I will have my husband check it out tonight when I get home. If that's the problem then it will save me the cost of taking it to the dealship to have the smoke tester put on it. Thanks.

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Visitor, November 13, 2010, 12:31

Hi,
Please let me know whether your car problem fixed after changing the Fuel Pressure regulator. Currently I am having this problem with my car. my email id is sthanjir@gmail.com

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