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← TechnologyWhich outcome occurs when piston rings experience blow-by?
A)Cylinder compression decreases notably✓
B)Fuel consumption decreases nominally
C)Engine vibration decreases slightly
D)Exhaust emissions significantly reduced
💡 Explanation
Increased blow-by allows combustion gases to leak past the piston rings, impacting the cylinder pressure via gas leakage because sealing is compromised; therefore, compression decreases rather than improves, and emissions rise because unburnt fuel escapes.
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