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<blockquote data-quote="cpetku" data-source="post: 20119" data-attributes="member: 7030">Change it.&nbsp; They eventually stretch and will cause issues.&nbsp; If it jumps too many teeth you will need a new engine since these are interference designsA common failure is the black guide on the right side of the timing chain which often takes out the upper bolt as well.&nbsp; Also the top guide.&nbsp;&nbsp; Phasors are verified with a 24mm (or crescent wrench) with slight movement of the cam shaft (assuming engine is TDC and phasor timing marks are aligned).&nbsp; These can all be inspected by removing the valve cover.&nbsp; A new gasket is recommended to prevent oil leaks, but in a pinch, the cover can be reassembled with the old one.Search for P0017 as well to understand a potential camshaft issue and look for it.&nbsp; Not highly publicized but it happens.&nbsp; I just did my S.O.'s car which had a dealership chain replacement at 100K.&nbsp; It failed by 144K along with Phasors, and exhaust cam, shaft.&nbsp; Lots of u-tube videos out there on replacing the chains, not much on camshaft, but relatively easy when changing the chain.</blockquote>

[QUOTE="cpetku, post: 20119, member: 7030"] Change it. They eventually stretch and will cause issues. If it jumps too many teeth you will need a new engine since these are interference designs A common failure is the black guide on the right side of the timing chain which often takes out the upper bolt as well. Also the top guide. Phasors are verified with a 24mm (or crescent wrench) with slight movement of the cam shaft (assuming engine is TDC and phasor timing marks are aligned). These can all be inspected by removing the valve cover. A new gasket is recommended to prevent oil leaks, but in a pinch, the cover can be reassembled with the old one. Search for P0017 as well to understand a potential camshaft issue and look for it. Not highly publicized but it happens. I just did my S.O.'s car which had a dealership chain replacement at 100K. It failed by 144K along with Phasors, and exhaust cam, shaft. Lots of u-tube videos out there on replacing the chains, not much on camshaft, but relatively easy when changing the chain. [/QUOTE]

Verification