timing chain - Performance Forum

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timing chain
Sunday, March 10, 2013 7:44 AM
i have a 2004 sunfire with a broken timing chain 2.2 ecotech i put in a new timing chain it starts right up compression is 210 on all 4 cylinders dry-wet all 4 are 298 the engine is misfiring code po-0300 and po-141 when i let off the accelerator and back on it will backfire a little and it does smoke a little bit has any one ever had this problem before thanks for the info

Re: timing chain
Friday, October 30, 2015 6:10 PM
That much compression jump at wet check would seem to me to indicate weak piston rings. Would also explain the smoking. I don't know how you avoided bending valves when the chain went south!
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