What are the symptoms of BMW's lack of cylinder

The lack of cylinder in the engine of Pacific Auto Network will lead to symptoms such as high fuel consumption, black smoke, weakness, decreased horsepower, serious jitter and increased driving noise. Lack of engine cylinder is very unfavorable to driving safety. Especially in the road section that needs to be heightened, the engine load of the vehicle without cylinder increases, and the body jitter is more obvious, which is very prone to instantaneous dead fire.

The lack of engine cylinder will lead to high fuel consumption, black smoke, weakness, decreased horsepower, serious jitter and increased driving noise.

Lack of engine cylinder is very unfavorable to driving safety. Especially in the road section that needs to be heightened, the engine load of the vehicle without cylinder increases, and the body jitter is more obvious, which is very prone to instantaneous dead fire.

Engine cylinder loss is generally divided into three situations:

1, no oil. Remove the nozzle and connect the oil tank below. Start the motor to see the quality of fuel injection. Under normal circumstances, it is intermittent atomization. If there is no oil, the oil is continuous and there is no atomization. Check the fuel nozzle, connecting pipeline and TCU.

2. No pressure. Remove the spark plug and measure the pressure with the cylinder pressure gauge special for the engine. Fully open the throttle and start the motor. Look at the highest value of the watch. Compared with the pressure of adjacent cylinders, the difference is not less than 5%. Can check the cylinder gasket, intake valve, exhaust valve and piston ring.

3, no fire. Remove the spark plug, install it on the high-voltage line, start the motor and watch the spark. Normal sparks are white. If there is no spark or the spark is red, check the spark plug, high voltage line and ignition coil.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)