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Which outcome leads when a heat engine's exhaust valve sticks open?

A)Reduced engine efficiency and overheating
B)Increased compression chamber pressure
C)Lubrication oil breakdown accelerates rapidly
D)Fuel injection timing becomes erratic

💡 Explanation

Inefficient exhaust scavenging and residual hot gases hinders cylinder cooling under the thermodynamic cycle because heat is retained into each cycle causing thermal inefficiencies; therefore, decreased engine performance and overheating occur, rather than only affecting pressure increase.

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