Saving a $17,000 Yamaha Outboard!

When a $17,000 Yamaha 200hp outboard starts making a rhythmic, metallic clicking noise, most owners fear the worst. The diagnosis begins with a strange pulsing in the oil filter and mysterious crankcase pressure. Is it a blown head gasket, carbon buildup, or something far more sinister hiding deep within the powerhead? After a full teardown, a leak-down test, and a surprising discovery inside the cylinder walls, the truth finally surfaces. Watch as this beast is stripped down to its core to solve a high-stakes mechanical puzzle that almost resulted in a total engine loss.