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List of contents of this article:

• 1,DigiPlus stock What's wrong with the BMW m62 engine with black smoke and speed shaking'What's the matter
• 2,BMW x5m62 engine ignition order
• 3, BMW X5M62 engine reporting timing control failure

What's wrong with the black smoke and speed shaking of the BMW m62 engine

Hello, reading the fault code 1215, which means that the air flow meter or its line is poor. After testing, the impedance of the air flowmeter does not meet the requirements. After replacing the air flowmeter, the condition of the car improved slightly, but the fault was still there. Check again and find that the 4th cylinder spark plug is covered with gasoline, indicating that the cylinder is not working.

The engine has serious carbon accumulation. The most common cause of idling jitter is excessive carbonisation of the throttle valve or fuel nozzle.

The solutions to unstable idle speed, shaking, shaking and black smoke are as follows: the engine is seriously carbonized. The common cause of car shaking is that the throttle valve is too dirty or the fuel nozzle has too much carbon.Solution: Clean the oil road and check whether there is carbon in the idle motor, which should be cleaned.

The control unit receives the wrong signal and sends the wrong instruction, causing the engine idling intake control to be inaccurate, causing the engine to burn abnormally, which is an indirect cause of unstable idle speed. Common causes are: air flow meter or its line failure; intake pressure sensor or its line failure; engine control unit plug due to poor contact with water inlet or internal computer failure.

BMW x5m62 engine ignition sequence

Engine ignition order is 2; that is to say, when cylinder 1 is doing work, cylinder 3 is in a compressed state, cylinder 4 is in the intake state, and cylinder 2 is in the exhaust state. Status.

People sit in the cab, and the order of the cylinder is: 5 on the right, and 6 on the left.In this case, the ignition order is: 1-4-5-2-3-6.

The ignition order of the engine is 2; that is, when the 1st cylinder is in the "work", the 3rd cylinder is in the "compression" state, the 4th cylinder is in the "ink-ink" state, and the 2nd cylinder is in the "exhaust" state. Depending on the number of engine cylinders, the ignition order of the engine will also vary.

BMW X5M62 engine reports timing control failure

Engine carbon accumulation problem, the engine will accumulate some carbon accumulation after a period of use, which will cause engine damage, difficulty in starting, poor acceleration, starting The machine is too noisy and other phenomena. Mixed gas combustion is poor and gas combustion is insufficient. Sensor problem. Multiple sensors are aging.

If the owner does not add oil as required, it will lead to accelerated engine wear and abnormal operation in the long run, and the engine fault light will turn on. Generally, replacing the oil with the corresponding conditions can eliminate the fault light.

The reasons why the engine fault light is on are engine carbonisation problems, poor combustion of mixed gas, sensor problems, maintenance problems and oil quality problems.Car owners need to regularly clean the carbon accumulation of the engine, check the working condition of the sensor, maintain it regularly, and use qualified oil products. The fuel quality is poor and does not meet the standard.