No compression on all cylinders after replacing the timing chain

2005 CHEVROLET IMPALA
160,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
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RANDY1955
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I replaced my timing chain I have all the marks all in align but now I have no compression on all cylinders. can someone explain?
Apr 15, 2021 at 9:13 AM
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ASEMASTER6371
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Good afternoon,

Most likely you have valve damage from the failed chain. The pistons hit the valves and bent the ends and that will prevent compression.

https://www.2carpros.com/articles/how-a-cylinder-head-works

You will need a machine shop to either replace all the valves or get yourself a rebuilt set of heads.



Roy
Apr 15, 2021 at 9:34 AM