What is the reason for the lack of engine power?

The reasons for lack of motivation are as follows: 1. The throttle of the engine is too dirty or out of order. Its function is to control the air entering the engine. Throttle plate is too dirty, and the valve plate opening is not allowed; 2. The spark plug of the engine is broken or the electrode is worn. The spark plug gap is too large, the ignition quantity is insufficient, the mixed gas combustion is insufficient, and the power is reduced; 3. There is something wrong with the fuel supply system. It may be that the vent hole of the fuel tank cover is blocked, which leads to the partial blockage of the fuel tank switch, the fuel filter and the oil pipe between the fuel tank and the carburetor, which can not meet the required fuel supply, resulting in the mixture being too lean and the engine unable to work. The reasons for insufficient vehicle power are as follows: 1. Air filter is blocked; Low fuel pressure; 2. Water temperature sensor failure; Improper ignition or weak high-voltage spark; 3. The throttle valve is improperly adjusted and cannot be fully opened; The fuel injector is blocked or poorly atomized; 4. Air flowmeter failure; Engine cylinder compression pressure is too low. The reasons for the lack of vehicle power are mostly caused by low fuel pressure, poor fuel injection by injectors, low ignition pressure or energy, inaccurate ignition timing, low cylinder compression pressure, and blocked exhaust pipe.