Solution for Blue Smoke Emission from BMW When Cold Starting

1 Answers
DeAdam
07/30/25 10:32am
Solution for blue smoke emission from BMW when cold starting is as follows: 1. Valve guide: The seal between the valve guide and the guide hole is not tight, causing engine oil to leak into the combustion chamber. The solution is that replacing the valve oil seal will not work, only replacing the valve guide can solve the problem. 2. Untimely maintenance: Not maintaining according to regulations. For example, not maintaining the engine in time after exceeding the mileage, using unqualified engine oil, not replacing the engine oil and oil filter on time, etc., resulting in the engine oil being too thin and incomplete combustion. The solution is to strictly follow the maintenance manual for maintenance. 3. Incorrect driving: Long-term incorrect driving methods, running with insufficient engine oil for a long time, long-term overload operation, etc., causing premature aging and wear of the engine. 4. Filter aging: The quality of the mixed gas involved in combustion is poor, or the filter is aged and damaged without replacement. The solution is to replace the aged and damaged filter.
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