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Replaced timing chain and heads on 4cyl 2004 Chevy Malibu. Car was missing...compression was good in all cylinders. replaced coil. Ran good for a short time...then started missing again. Anyone have any ideas....


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Location: Oregon
need more info. How do you know your car is missing? check engine light flashing? codes stored in computer? when does it misfire? idle, cruise, under acceleration, all the time? Why did you do the timing chain and heads? When you took the engine apart did you find any problems? did you have your heads resurfaced and pressure test them?

a scanner will help you find out which cylinders are missing and then you can concentrate on what is affecting those cylinders


   
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threw timing chain..which in turn bent the valves. used heads installed. Compression test on all the cyl good. Car misses all the time. Installed new coil. Car ran fine for a few minutes..then started to miss again. Now it just misses even at idle. No check engine light is on...I thought he said he scanned it and no codes came up


   
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you should use a scanner that has a misfire counter. While the car is running it will show all the cylinders and which ones are missing and how much they are missing. Then you know what cylinders to check out


   
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I have a 1998 malibun3.1 check engine light flashing scanned misfire 6cyl so I changed everything plug,wire,injector,coil pak,and icm and its still flashing to only reading p0306 has anybody heard of this or dealt with this type of problem the engine runs smooth no rattle no knock until cel starts flashing then it runs real rough


   
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