vauxhall corsa 1.3cdti 2004

after replacing timing chain, tensioner sprockets top end very noisy and hard to start, valve timing correct oil pressure light goes off, any ideas

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  1. Timing is probably one tooth off and or the tensioner is not working properly.

    The Hard to start indicates the timing being off.
    The noisey top end indicates the tensioner not doing its job.

    Take it back apart, recheck and reset timing marks, then rotate the engine2 to 3 times and re-check timing marks.

    With most tensioners, it will move the marks once installed, so you have to set the marks one tooth back and then install the tensioner son that once in place the marks line up under tension. This is why you need to rotate the engine several times and recheck your marks to make certain they are on the money!

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