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I don't think the number 2 cylinder has good compression due to overheating.

It is rather the other 5 cylinders that have badcompression due to overheating.

Both cylinder heads have to be re-surfaced after checking for any cracks/compression leaks.

Re-do the valve seating.

New gaskets, valve stem seals, antifreeze etc. and after a certain mileage, a re-tightening of the cylinderhead bolts.

Also, fix the original problem, which may be a leak in the cooling system.

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Q: How do you fix a v6 engine that only the number 2 cylinder has good compression due to overheating?
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