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What Are the Causes of Engine Shaking Without Fault in BMW Mini?

1 Answers

AsherDella

07/30/25 8:07am

BMW Mini engine shaking is mainly caused by fuel-related issues and problems with the solenoid valve. Fuel-related causes of shaking: In cold winter weather, the engine may shake due to poor fuel atomization, large spark plug gaps, and other reasons. In summer, engine shaking is more commonly caused by fuel-related factors. High summer temperatures lead to increased fuel vapor. To meet environmental standards, fuel vapor is absorbed by the vehicle's activated carbon canister and then controlled by the solenoid valve to enter the engine's intake system, where it is ultimately burned. However, if the weather is excessively hot in summer, excessive fuel vapor can cause the solenoid valve to supply additional fuel to the engine, disrupting normal operation and resulting in vehicle shaking. Additionally, when the air conditioning is turned on, the engine load increases, making previously unnoticeable issues more likely to surface. Solenoid valve-related causes of shaking: If inspection reveals that the Mini engine shaking is due to a solenoid valve issue, simply replacing the Mini solenoid valve and clearing the fault code should resolve the problem. If severe engine shaking is caused by the Mini burning oil, a detailed repair addressing the root cause of oil burning—such as replacing valve seals or piston rings—will be necessary.

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