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2004 Chevy Suburban Strong gas smell after start when idlin

Tiny
SIXFAIRVIEW
  • MEMBER
  • 2004 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 38,000 MILES
I just replaced the manifold gaskets and now I get a strong smell of gas after the engine is started and goes to idle. There are no starting problems and the eninge seems to be running smoothly with no check engine light. I am wondering if the computer controlling the fuel pump was overcompensating for the leaky old gaskets by pumping more fuel and now that the new gaskets have a good seal the overcompensation leads to too much gas. Does anyone know which fuse controls the fuel pump? I know I could disconnect the battery, but I would rather just pull the fuse.

Thanks
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Monday, December 22nd, 2008 AT 12:23 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi:
Are you getting the smell from under the hood? If so, check all injectors for a leak where the attach to the engine. They have o-rings that go bad and leak fuel.

As far as overcompinsation of fuel, it could have to do with the regulator, but if it wasn't a problem before, chances are it isn't now. And if it's a sensor, the check engine light should kick on.

Let me know what you find.

Joe
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Friday, December 26th, 2008 AT 11:34 AM
Tiny
SIXFAIRVIEW
  • MEMBER
  • 5 POSTS
The smell is from both outside and inside. I did not remove any of the injectors but I can check the o-rings. The check engine light is not on.

Thank you
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Wednesday, December 31st, 2008 AT 6:55 AM

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