When the engine is in low temperature or small load, the smoke is discharged, and the temperature becomes higher, and then the exhaust is changed into the deep gray smoke, and the power is not enough.
The reason
When the engine is running, the exhaust pipe discharges the blue smoke, because the oil enters the combustion chamber, when the engine is in the low temperature or the small load does not burn the blue smoke to discharge. But when the engine temperature increases or the load increases, the engine oil is burned, and dark gray smoke. The reasons for this phenomenon are:
Poor intake, leading to the turbocharger oil is sucked into the cylinder combustion.
The Baotou beiben heavy truck parts oil sump oil too much, more than the highest limit.
Valve guide oil.
The serious channeling oil cylinder.
The Baotou beiben heavy truck parts supercharger rotor shaft wear, oil retaining ring is damaged, the supercharger is not up to the rated speed, the oil leakage.
The diagnosis and treatment methods
Check whether the air intake is smooth, check whether there is oil in the turbocharger shell.
The 5min engine is extracted after the dipstick, check the oil sump oil is more than the maximum limit; if more than the excess should be released.
If the above tests were normal, remove the injector, check the needle Deputy orifice is smooth, if the carbondeposition or oil, the oil into the cylinder is illustrated.
Check valve guide seal gap and upper pipe and the valve stem is too large. We should further remove the cylinder head check the piston ring is stuck in the ring slot, end gap mouth, fracture, elastic weakening, conical ring or twist ring is reversed, piston, piston ring and cylinder wear is too large, there is no scuffing phenomenon, if there is any abnormal situation must be timely maintenance.
It is because of the improper use and timely maintenance is not caused by the Baotou beiben heavy truck fittings supercharger rotor shaft oil seal damage and leakage of oil, mixed with fresh air into the cylinder, or from the end with the exhaust from the turbine is high temperature exhaust gas vaporization. Turbocharger rotor shaft is leaking, tear into, out of the trachea will be at a glance. If the leakage oil should replace the oil seal, and should be cleaned turbine carbon, check the bearing clearance of the rotor shaft, to avoid damage to the new oil seal.