What Causes the BMW B48O Engine to Shake?
1 Answers
There are several reasons why the BMW B48O engine may shake: Spark plug aging: Spark plugs are inherently wear-prone components that require periodic replacement according to the maintenance manual. However, most car owners typically do not strictly follow the replacement intervals specified in the manual unless issues arise. Ignition coil aging: Although ignition coils are not considered wear-prone parts and most vehicle models do not require regular maintenance replacement, they are among the components with relatively high failure rates in engines. The ignition coil supplies high-voltage pulse current to the spark plugs, which is closely related to cylinder ignition performance, making this a common fault. Charcoal canister or canister purge valve failure: Since the fuel vapors released by the charcoal canister constitute a significant portion of the engine's air-fuel mixture, any blockage in the canister or damage to the purge valve can disrupt the mixture balance, leading to engine shaking.