NO. You check it by lining up the timing marks on the camshaft and checking the degrees on the vibration damper on crankshaft. Replace chain or install offset woodruf keys in camshaft gear if off more than three degrees. Tensioner (if it is working properly) will keep chain tight even though the chain is elongated due to wear. So if there is any slack in chain, the tensioner is bad. Parts shop has replacement tensioners.
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