In a diesel engine, blow-by（）<br>A:increase exhaust back pressure<br>B:causes excessive crankcase pressure<br>C:can only be detected by a compression check<br>D:decreases fuel consumption

In a diesel engine, blow-by（）
A:increase exhaust back pressure
B:causes excessive crankcase pressure
C:can only be detected by a compression check
D:decreases fuel consumption

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