What's wrong with the cold car starting like it can't supply oil?

This situation belongs to the lack of fire in the working cylinder, which can not make the engine run normally. It is recommended to replace the spark plug with carbon deposit, and try to preheat it for one to three minutes before starting in the future.

1, too much carbon deposit on throttle and air flow meter. Throttle and air flow meter are still easy to get dirty. Nowadays, most cars are electronic throttles, and a little carbon deposition may affect them. Too much carbon deposition on the throttle will cause the throttle to jam (unable to refuel), the power will drop seriously and the idle speed will be unstable.

2, cylinder combustion chamber, piston carbon deposition is too much.

Too much carbon in the combustion chamber of the cylinder will adsorb gasoline to some extent, so the ignition time will be extended a little. In addition, too much carbon deposit will be formed on the valve and piston ring, which indirectly causes insufficient cylinder pressure, and the cold car is prone to idling instability (no oil can be added), which is good for the hot car.

Extended data:

Maintenance method

1, which should be dismantled and cleaned up.

2. Correct some misunderstandings of cleaning the throttle.

3. The fouling of the throttle is mainly engine oil vapor, followed by particles and moisture in the air. That is to say, using a qualified air filter and removing the crankcase ventilation pipe, the fouling speed of the throttle will be much slower.

Baidu encyclopedia-throttling