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Hi,

About a month ago, the tab on the TB tensioner broke off 20,000km after the last belt change (the tensioner had been installed incorrectly, I now realise). It just died and wouldn't start. The garage that just did the repair (diesel specialist) seemed much more knowledgeable than the one that installed it badly, and said that I'd had a very lucky escape and that there wasn't any damage to the engine. They test-drove it and I drove it home, it seems fine.

However, having read around a bit I am now worried that some damage may have occurred and I've now got a ticking time bomb for an engine... I have 2 questions:

1) Is there any way to be sure there's no damage without looking for marks on the pistons? (I'm thinking unusual sounds etc)

2) How much time (and $) would a simple head rebuild take, and what exactly would be involved?

Thanks in advance, all!
 

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If it seems fine then don't worry too much about it. They said there wasn't any damage and it drives fine. A head rebuild takes a while. If you pay someone it'll cost wel over $1000 dollars.
 

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Rebuild of what? If it seems fine it probably is. The tensioner probably let the engine go out of time just enough so that the engine wouldn't start and that was it. You could remove the glow plugs and use a scope to inspect the tops of the pistons to inspect for damage. You could also remove the valve cover and look for hairline cracks on the lifters. I remember seeing pictures here of cracked lifters.
 
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