4/18/2023 0 Comments Winterizing inboard motorIf you don’t, moisture can cause excessive wear, which can lead to loss of power, poor fuel economy and possible engine failure. Change the OilĬhange engine oil to eliminate moisture and prevent corrosion. Outboards self-drain and never require this step. Tip: Newer MerCruiser stern-drives have handy drainage systems with one drain plug near the front of the engine. If you don’t drain the engine, water in the cooling chambers can freeze, expand and crack the engine block and manifolds. Remove the water-pump hose from the bottom of the water pump to let it drain completely. Locate and open the petcocks (some engines have bronze plugs similar to bilge plugs) underneath the manifolds and on the sides of the engine block. Cost if you don’t: $2,500 to $15,000 (or more).ĭrain the Engine (for inboards and stern-drives) If you don’t fog the engine cylinders, corrosion can form inside the engine, covering the cylinders, pistons and rings with a patina of abrasive crud. Hook “ear muffs” and a garden hose to the engine, start it, and then spray the fogging-solution lubricant directly into the air intake until it’s gone. Each engine manufacturer makes proprietary products they promote as ideal for their engines. Fog the Engine CylindersĪerosol fogging solutions coat the inside of the engine to protect it until spring. If you don’t stabilize the fuel, carburetors and fuel injectors can be clogged with varnish deposits that ruin fuel systems. After adding it to the fuel, run the engine for 10 minutes or so to be sure stabilized fuel circulates throughout the engine. Pennzoil Fuel Stabilizer, PRI-G and Stabil are ideal products for this job. Treat your boat’s fuel with a stabilizer. But follow these easy tips, and your boat will be ready and eager to go in the spring. Too many boats die silently in their winter beds.
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