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Engineering, 04.12.2019 18:31 jadejordan8888

Hot spots found on the cylinder bore near the exhaust valve indicate that the engine has experienced some localized overheating. technician a says that the hot spots are signs of cylinder bore damage and should be repaired through a resizing process. technician b says the hot spots are nothing more than carbon stains left by the vaporization of oil on the cylinder bore. who is correct?

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