2001 Chevy Impala fuel

2001 CHEVROLET IMPALA
140,000 MILES • 6 CYL • 2WD • AUTOMATIC
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CARRIELAL
  • MEMBER
  • 1 POST
when driving, idling, accelerating the car seems to stutter. I'd guess mis-firing, but the plugs and wires have been changed. I have also done the fuel filter. The exhaust smells rich of gas and gas mileage has become horrible, what could be causing the issue?
Jan 7, 2008 at 7:15 AM
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DENNYP
  • ✓Experienced Mechanic
  • 1,824 POSTS
sounds like you have spark grounding out somewhere. You should re-check your plugs and wires. Make sure you don't have a corroded coil tower. You might also have a fuel pressure regulator leaking into the vacuum hose.
Jan 8, 2008 at 11:32 AM
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