2003 Chevrolet Suburban Missing running on 6 cylinders
JLGREGO
MEMBER
2003 CHEVROLET SUBURBAN
5.4L
V8
4WD
AUTOMATIC
187,000 MILES
Too. Truck in for tune up and was told that the engine was running on six. Cylinders they switched the two coils for those cylinders and nothing happened
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Friday, September 26th, 2014 AT 5:22 AM
1 Reply
HMAC300
MECHANIC
48,601 POSTS
Misfires are extremely hard to diagnose so a pro should do this. It can be anything form an injector to basic engine problems. Check compression and fuel pressure with a gauge autoparts rent it