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Old 08-04-2014, 12:30 PM   #2 (permalink)
ThePapaJohn
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Location: Richmond, KY
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A few things come to mind:

Malfunctioning injector (s)
Incorrect timing (easy check)
Buildup of carbon in the cylinder (pull your spark plugs [one at a time] and a quick peek might reveal)

These are the leading causes these days for gasoline engines to have a "dieseling" problem.

With you having a rough idle and hesitation to boot, sounds like a timing issue. How many miles on it? When were the plugs/wires last changed? (I've lost count on how many times I have come over to someone's house that attempted to DYI a poor man's tuneup - and miss wired - causing this problem....

Update info always appreciated ~ even if you fixed it on your own...
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ThePapaJohn

2007 Chevy Equinox LS
Plain base model - Black
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