If the ignition time is too late, the pressure in the cylinder will be reduced and the combustion of the mixture will be sluggish. When the intake valve is opened, the incomplete combustion gas flushes back to the inlet port, which causes the inlet to shoot. This phenomenon is similar to the flashback shooting of inlet caused by too thin mixture. In diagnosis, the acceleration pump can be used to improve the mixture concentration. If the shooting phenomenon is eliminated, the mixture will be too thin; if the shooting phenomenon still can not be eliminated, it may be caused by too late ignition time. If the distributor can be turned, the fault can be eliminated if the ignition time is advanced.
Check the balance regularly. Regular detection of the balance can not only prolong the tire life, but also improve the stability of the car when driving.
Radial tire and bias tire have different lateral force. If two different tires are installed on the same axle at the same time, it will cause oversteer or understeer, or easy to cause sideslip.
Timely replacement. It is suggested that the service life of the tire is about 40000 km. If the road condition is very good, it can be extended to 60000 km. If the driving mileage is small but the service life is more than two years, it is also recommended to replace the tire.