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Which outcome occurs when a diesel engine cylinder's piston ring gaps align during compression stroke?

A)Reduced compression and power output
B)Increased oil consumption and smoking
C)Elevated cylinder head temperatures
D)Rapid catalyst poisoning

💡 Explanation

When piston ring gaps align, blow-by increases because high pressure combustion gases leak past the rings into the crankcase, diminishing peak cylinder pressure and energy extraction. Therefore, reduced compression occurs, rather than high oil consumption/smoking, overheating cylinder, or catalyst contamination that each arise from alternative failure origins.

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