Does Engine Bearing Failure Require Overhaul?

[LeahAnn]

Since engine bearing failure requires disassembling the engine for repairs, an overhaul is necessary. Below are scenarios involving cylinder scuffing or piston crown burning: 1. Clogged oil cooling nozzle: The oil cooling nozzle on the engine block normally sprays oil into the piston cavity to cool the piston. If the oil cooling nozzle of a particular cylinder gets clogged, that cylinder's piston will accumulate heat and overheat, easily leading to piston crown burning or even cylinder scuffing. 2. Incorrect fuel injection timing: Whether the engine's fuel injection timing is delayed or advanced, it will result in incomplete fuel combustion. This not only makes the diesel engine operate roughly but also easily causes overheating, leading to cylinder scuffing or piston crown burning. 3. High intake air temperature: If the engine's intake air temperature is too high, the temperature of the air entering the cylinder increases, causing the engine to overheat. Prolonged operation under such conditions may result in cylinder scuffing or piston crown burning.