Phenomenon 1: the engine oil consumption is large, but the exhaust smoke color is normal, and the power is not reduced.

Cause: this situation is generally caused by oil leakage.

Treatment method:

1. First, check whether the external oil pipes of the engine lubrication system (including the oil inlet and return pipes of the supercharger) leak oil;

2. Check whether there is oil at the exhaust gas outlet of supercharger. If there is oil, it can be judged that the sealing ring at one end of the turbine is damaged, and the sealing ring should be replaced.

Phenomenon 2: the engine oil consumption is large, and the exhaust emits blue smoke, but the power does not drop.

Cause: the oil leakage at the pressure end of the supercharger is caused by the engine oil entering the combustion chamber through the engine intake pipe and being burned. There are several possibilities:

1. The oil return pipe of the supercharger is not unblocked, and the oil is accumulated at the middle support of the rotor assembly and flows into the compressor impeller along the rotor shaft.

2. After the seal ring or oil slinger near one end of the compressor impeller is damaged, the oil enters the impeller chamber, and then enters the combustion chamber together with the pressurized air in the chamber through the inlet pipe.

Treatment method:

1. Open the air outlet of the compressor or the straight inlet pipe (rubber hose) of the engine to see whether the oil adheres to the nozzle and pipe wall. If yes, please check whether the oil return pipe of the supercharger is unblocked. If it is not unblocked, it is caused by excessive oil accumulation at the intermediate support. The oil return pipe shall be dredged and reassembled.

2. If it is unblocked, it is caused by the damage of the sealing ring or oil slinger at one end of the impeller. The supercharger shall be disassembled for repair.