Why Does the BMW Engine Experience Abnormal Power Loss?

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BMW engine abnormal power loss may be caused by fuel supply issues or ignition problems. Below is a detailed explanation of the reasons for BMW engine abnormal power loss: Fuel supply issues: Focus on checking the fuel pump. Secondary checks include whether the fuel injectors are functioning properly, whether fuel atomization is adequate, and whether there are any leaks in the fuel injectors. Ignition problems: Delayed ignition, damaged spark plugs, carbon deposits, oil contamination or erosion on spark plugs, excessive spark plug electrode gap, insufficient angle of the distributor centrifugal ignition advance device, and the vacuum ignition advance device's adjustment of the ignition timing not meeting requirements can all lead to engine power loss. Among these, the first step is to check for carbon deposits or damage on the spark plugs, then inspect the ignition timing, and finally examine other potential issues.