Motorcycle failure analysis

1. Blue smoke from the exhaust pipe

The fault phenomenon of blue smoke is: during the working process of the engine, light blue smoke is often seen at the tail of the exhaust muffler, and the oil consumption is too fast. The reasons for the failure may be: the oil level is too high; the cylinder compression pressure is lower than the specified value; the gap between the piston, the piston and the cylinder barrel is increased.

2, the exhaust pipe emits black smoke

The fault phenomenon of black smoke is: when the engine is working, the exhaust pipe emits black smoke, and the pungent gasoline smell can be smelled, which is more obvious when accelerating. The reasons for the failure may be: the mixture is too rich; the spark plug is not working well; the ignition is too late.

3. White smoke from the exhaust pipe

The original fault phenomenon of white smoke is: when the engine is working, the exhaust pipe emits white smoke. The cause of the failure may be: moisture in the fuel; moisture in the cylinder or muffler.