Q: Can a bolt that holds the tensioner on be fixed without being too expensive?

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I was changing the thermostat and while removing the bolt that holds the tensioner on, it was hard to turn out but it came. While putting the tensioner back on, the bolt got tight and broke off at the head of the bolt. Is this goin to be expensive to fix? Thank you. 2003 Jeep Libery 3.7L

If the bolt has broken off inside the timing cover, it is likely that it will be expensive to fix. Either the bolt will have to be drilled out and replaced with a new one (best case scenario) or the timing cover itself will require replacement. It is possible that when the attempt at drilling the bolt out occurs that the timing cover could be further damaged by the drill. The most inexpensive route would be to try and drill out the old bolt.

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