I have a 2008 Chevy Silverado 5.3. Truck idles good when in park but when I put it into gear the check engine light comes on. P0307, witch is Cylinder 7 misfiring. Ive changed all the lifters,coils,injectors and solnoids. Plugs and wires as well. Even turned off the AFM to see if that would help. cleaned the pushrods, made sure they worked. valley cover has been cleaned as well

20

Asked by Kevmcc02 Sep 09, 2017 at 03:11 PM about the 2008 Chevrolet Silverado 1500 Work Truck Extended Cab RWD

Question type: Maintenance & Repair

I have a 2008 Chevy Silverado 5.3. Truck idles good when in park but when I put it into gear the check engine light comes on. P0307, witch is Cylinder 7 misfiring. Ive changed all the lifters,coils,injectors and solnoids. Plugs and wires as well. Even turned off the AFM to see if that would help. cleaned the pushrods, made sure they worked. valley cover has been cleaned as well

Could my computer me messed up or stuck on that code some how?

2 Answers

540

Did you ever do a compression test on the cylinders, so your not wasting money on issues that don't exist. Ever have it scoped. Need more data.

3 people found this helpful.
20

I did a compression test and leak down. Checked the lift on the cam

2 people found this helpful.

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