Bought a 2002 Corsa 1.2 16v with problems, which was bought cheap enough to justify engine replacement at worst case scenario. Engine ran fine with no mis-firing however sounded HORRENDOUS. Very loud rattle. Have lifted the camshaft cover and found some of the rockers/rocker arms (beneath the cams, on top of the lifters) not straight and very loose. A couple of them are that loose that the cam lobes have been running off the rockers completely and running on the edge, and have completely destroyed the cams. Scores and chunks missing from the cams. Timing chain seems slack too.
What would have caused this?
What would have caused this?
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