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8.1 engine missing and stinks.....

kevinmach1

By kevinmach1
February 5, 2006 in Ask A GM Technician

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kevinmach1

Enthusiast

kevinmach1

Posted February 5, 2006

Posted February 5, 2006

I have an intermittent problem with my 02 yukon with the 8.1. I had a miss that we changed the plugs and plug wires out with new ac delco parts. It runs great most of the time, but once in a while I get a wierd rough idle, sputtering and low power symptom with the exhaust smelling really nasty. If I shut off the engine and restart, the problem goes away for a few days.

Any ideas? I am questioning if I have a bad coil?

Thanks..Kevin

dewfpo

Senior Enthusiast

dewfpo

Posted February 5, 2006

Posted February 5, 2006

Any codes set?

If the exhaust is smelling nasty then your running rich or the engine is missing. That should set a code.

DEWFPO

N900WM

Enthusiast

N900WM

Posted February 10, 2006

Posted February 10, 2006

Mine did the exact same thing only mostly at WOT. Turned out one of the new Delco plug wires was bad.

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