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On the Ecotec... change the timing chain tensioner to prevent issues.
GM has had 3 timing chain tensioner revisions. You want the one that has the bump on it (3rd Gen tensioner)
Numerous issues of Ecotecs jumping time. Tensioner goes bad, chain stretches, engine needs new valves... hopefully yours isn't that bad yet.
Good engine otherwise.
On the 2.4L Quad 4, once in a while one lasts 200k.
Usually though, that engine can be placed in the same category as a Chrysler 2.7L V6.....!
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