Periodic Maintenance and Adjustment 8-58
Table 5: Solution of Common Problems in Engine System
S/N Problems Solutions
1 Idle speed is not stable
1. Check the battery voltage for Within specified value
2. Check the rectifier output voltage for within specified
value
3. Check MEUI for failure
3
Power performance is
falling.
1. Check and clean air filter.
2. Check muffler for partly block and clean spark arrestor.
3. Check tire pressure.
4 Popping noise in engine.
1. Check air cleaner and admission line for leak.
2. Check the connection joint of exhaust pipe with engine
or muffler for leak.
3. Check the grade of gasoline to see if it’s too low.
5
Engine is difficult to start
at low temperature.
1. Check to determine if the battery voltage drops during
cold weather.
2. If the temperature is under -18℃, have the vehicle
placed in warmer place for start.
6 Coolant boils.
1. Check the cooling fan to make sure it is not blocked by
dirt or debris.
2. Check the radiator sensor for damage and check the fan
motor for
ro
er o
eration.
3. Check if the dilution of the antifreeze and make sure the
ratio is 1:1 or
reater.
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