It's cold, and it feels heavy to refuel. What happened?

Low cylinder pressure leads to engine power decline, especially in the cold state, and there is too much carbon deposit in the intake valve and intake pipe, which can be cleaned;

2. Excessive carbon deposition in the intake valve and intake pipe.

The injected gasoline is adsorbed by carbon deposits and cannot enter the combustion chamber;

3, engine management system failure

Incorrect water temperature and intake air temperature signals, line failure, etc.

4. The ignition system is faulty.

For example, the spark plug has too much carbon deposit or the gap is wrong, the high-voltage line and distributor cover leak electricity, and the ignition coil is damaged.

5, oil supply system failure

For example, due to excessive colloidal carbon deposition in the nozzle, the nozzle is not tightly closed or blocked.

Extended data:

Matters needing attention in winter car use:

1. Warm up the car before driving.

After a cold night, the oil has flowed into the oil pan, but after the hot car, the oil can't be delivered to the piston that needs lubrication most immediately through the oil pump, so it needs to be warmed up. The preheating time should not exceed 1 min, preferably between 30 seconds and 1 min. When driving on the road, you should step on the accelerator slowly, and you can drive normally after the water temperature rises.

2, timely replacement of glass water in winter.

After winter, the weather is getting colder and colder, and the lowest temperature in some parts of the north has reached below zero degrees Celsius, so it is necessary to replace the antifreeze glass water in time. The antifreeze glass water should also be selected below the local minimum temperature, otherwise the glass kettle and pipeline will freeze and crack.