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Bought a $300 borescope for a Cessna 172 and it paid for itself in one job
We had a rough-running engine on a 172 last month and the owner was sure it needed a top overhaul. I got the new borescope and found a single, slightly bent pushrod in cylinder three, clear as day. That saved pulling the jugs for no reason and a huge bill for the owner. Anyone have a favorite brand for these, or a trick for getting a good view past the valves?
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