It is difficult to start the cold after cleaning the throttle.

Throttle failure will lead to airtight cylinder, leakage of mixed gas, insufficient pressure in the cylinder, difficult ignition (and high voltage, that is, the pressure in the cylinder and the compression temperature of mixed gas can't meet the ignition conditions). In severe cases, the cooler can't touch the car, the combustion is incomplete, the locomotive has no electricity, and it will also cause fart (the exhaust pipe slams).

There are two kinds of throttles: traditional cable throttle and electronic throttle. The traditional engine throttle control mechanism works by pulling a cable (soft steel wire) or a pull rod. One end of the cable is connected with the accelerator pedal, and the other end is connected with the accelerator linkage plate. The electronic throttle mainly uses the throttle position sensor to control the throttle opening according to the energy required by the engine, so as to adjust the intake air.