Ace REVIS 4.2m 160 HP engine has serious jitter.

There are generally four main reasons for engine jitter.

1, engine cylinder is missing.

2, machine foot glue aging or loose

3. Carbon deposition problem

4. Fuel system failure. Engine cylinder missing mainly means that one or more cylinders of the engine are not working normally. Generally, the exhaust gas flow from automobiles is obviously intermittent. At the same time, the exhaust pipe vibrates badly, and the engine jitter can be obviously felt, sometimes accompanied by sudden sounds. This is mostly related to ignition coil failure. Foot glue is a rubber block between the engine and the frame. Its function is to reduce the vibration and buffer when the engine works and fix the engine. Once these machine feet are aged or loose, the engine jitter will become extremely serious. The effect will be much weakened after changing the foot glue again. Carbon deposition includes cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition and so on. When there is too much carbon in the engine, it will affect the ignition energy, intake efficiency and mixing ratio of the automobile, resulting in unstable power output of the automobile and jitter when idling and accelerating. This suggestion is to go to 4S shop to do engine cleaning project. When the fuel system fails, an inappropriate fuel label is added, which leads to the decrease of the output power and power of the automobile, or the fuel tank switch, the fuel filter and the fuel pipeline between the fuel tank and the carburetor are partially blocked due to the blockage of the vent hole of the fuel tank cover, which can not meet the required fuel supply, resulting in the mixture being too thin and the engine shaking.