Quote:
Originally Posted by BYprodriver
I'm guessing a cam drive chain jumped a tooth or 2 & the pistons kissed the valves enough to bend them enough to prevent them from sealing. Loss of compression in the cylinders due to the leaking can easily be heard with engine running & engine still runs with big power loss. If seller would make video with sound of engine running it would help evaluate extent of damage.
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Thank you for this answer. I am of the same opinion like you. Why do you think the cam drive chain jumped a tooth, broken tensioner?