06 Hummer H3 5 speed sputters while accelerating
10

Asked by C_L0S Sep 24, 2017 at 10:34 PM about the 2006 Hummer H3 4dr SUV 4WD

Question type: Maintenance & Repair

My 5 speed H3 3.5L is sputtering when i accelerate.I had a oil leak into where the first ignition coil due to the valve cover bolts coming loose.i thought the ignition coil went bad due to it getting covered with oil, so i bought one and it's still doing the same thing(Also tightened valve cover bolts and no more leaking oil). Also cleaned my MAF and throttle body with the maf and throttle body cleaners,still sputtering.i notice when i'm on the highway it really doesnt do it,runs pretty normal.Forgot to add that their are no check engine lights.

2 Answers
10

C_L0S answered 6 years ago

**Update** changed the spark plugs and driving like new again.Also there was a little oil on the spark plugs and noticed that my valve cover bolts are getting loose again.

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