Cleaning the Inside of an Outboard!

A state-of-the-art camera probe is sent deep inside an outboard engine to uncover signs of hidden damage and carbon buildup before attempting a deep-clean procedure.

Every outboard engine harbors a hidden world deep within its cylinders, where carbon buildup silently chokes performance and threatens its lifespan. This video begins with an exclusive mission: sending a cutting-edge, 180-degree articulating borescope deep inside the motor through the spark plug port. The camera delivers an unprecedented, crystal-clear view of the internal walls and valves, revealing the true condition of the engine's core. What is discovered here dictates the next critical phase: a radical, high-stakes decarboning treatment.

The procedure involves applying a specialized combustion chamber cleaner directly into the running engine's intake, a process that generates plumes of smoke as the motor struggles to purge years of residue. After this aggressive intervention, the engine is left to soak overnight—a tense waiting game before the final reveal. Will this treatment successfully reduce the compression leak down and save the engine from an expensive repair? The definitive answer, and the final inspection with the borescope, awaits at the end of this journey.