Advanced Jet Ski Inspection for Hidden Damage

What happens here

The speaker recounts a personal experience of buying a jet ski with a 'new motor' that was actually seized due to a hidden fire damage on the bottom side of the engine, which was not visible from the top. This underscores the necessity of a thorough inspection. Buyers should perform a compression test (all cylinders should be within 5 PSI of each other; any greater difference indicates a problem), check for hull cracks or hidden repairs (often indicated by paint discrepancies or uneven surfaces), and inspect the impeller for damage caused by sucking up rocks or sand. Propeller damage directly impacts acceleration and performance, often without the seller even noticing the gradual decline.

Goal: This step details advanced inspection techniques for jet skis, including compression testing, checking the hull for repairs, and examining the impeller for damage.