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How do I detect camchain wear?

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Oddjob:
I've found Ted that whilst it's standard to replace the chain whilst the engines apart it's the tensioner which could be the real problem, I've got quite a few of them now and most show some sort of damage, most common is having the tensioner actually bent out of shape, very common to see the bottom section well out of line with the top and normally bent inwards. Also damage to the cups where the damper rubbers go, gets damaged by the primary chain if it's very worn. All these stop the tensioner working correctly.

TBH you don't tend to notice it until you have 2 or 3 side by side and you can see the difference in the shapes.

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