ENGINE RUNS HOT

1999 GMC Sierra

Tiny

DerrickG6687

November, 22, 2011 AT 8:09 PM

The truck has a 4.3 vortec in it When it rains and when its first started in the morning up until it reaches peak engine temp it misfires what could be the problem

FOUND 1464 RELATED QUESTIONS

Running Hot

15 ANSWERS
2 IMAGES

1 Answer

Tiny

rasmataz

November, 22, 2011 AT 8:13 PM

http://www.2carpros.com/articles/engine-misfires-or-runs-rough. Defective spark plugs or vacuum leak.

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