Maserati President's cold car engine trembled and backfired.

Spark storm damage, poor fuel quality and excessive carbon deposition. Causes of abnormal engine jitter and tempering of Maserati President's cold car;

1, spark plug is damaged. The wear of spark plug gap will lead to insufficient ignition quantity of spark plug, and then insufficient combustion of mixed gas, which will lead to jitter when the car accelerates. The ceramic part of the spark plug also has cracks, which will cause the spark plug not to ignite, and one cylinder will also lead to accelerated jitter. At this time, the spark plug should be replaced.

2. Poor fuel quality Poor gasoline quality will lead to poor atomization effect of the fuel injector and insufficient combustion of the mixture in the cylinder, which will also lead to engine jitter. Use up this box of gasoline and clean the fuel system with high-grade gasoline.

3. Too much carbon deposit, too much carbon deposit in the nozzle, and too dirty throttle will cause the throttle to be closed loosely or the Italian stepping motor to be stuck. Both of these situations will cause the Italian speed of the engine to be too high, and the carbon deposit generated during the engine work will also cause the vehicle to shake, especially when starting the vehicle, the engine shake will be more serious than usual, and even there will be a phenomenon that it cannot be started once. Therefore, when the vehicle is shaking, first check the throttle and throttle. If the throttle valve is found to be too dirty or the fuel injector has too much carbon deposit, it should be cleaned in time.