The boat i bought in February had not had basic maintenance done for the entire tenure of the previous owner (10 years) it seems.There were numerous engine repairs (2QM20) and services required, such as new fuel and oil filters, oil change, pulling the aluminum fuel tank, draining sludge, and welding numerous holes; replacing the lift pump, and repairing the oil line to the head. I pulled the head to inspect the valves and cylinders; the cooling passages were completely plugged, with completely deteriorated zincs. The valves were ground and lapped, the head was descaled, and the cylinders lightly honed.
The engine ran like a champ after all that, but i was still missing one zinc that protects the block. When it arrived, as i was installing it into its plug, the threads broke completely away from the head of the plug! The plug was the original bronze plug and had suffered from depletion and had basically corroded in half. After nearly 3 weeks, the replacement, made from stainless steel, arrived and was installed with the zinc in short order. Hurray, I can motor off the dock again! Just goes to show that doing basic services is very important to ensuring the readiness of your vessel.
The engine ran like a champ after all that, but i was still missing one zinc that protects the block. When it arrived, as i was installing it into its plug, the threads broke completely away from the head of the plug! The plug was the original bronze plug and had suffered from depletion and had basically corroded in half. After nearly 3 weeks, the replacement, made from stainless steel, arrived and was installed with the zinc in short order. Hurray, I can motor off the dock again! Just goes to show that doing basic services is very important to ensuring the readiness of your vessel.
