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After many cycles, which outcome results from exceeding maximum temperatures inside the cylinders of a gasoline engine?

A)Detonation from fuel auto-ignition
B)Pre-ignition from carbon deposits
C)Valve float from spring weakening
D)Insufficient lubrication from oil vapourization

💡 Explanation

When maximum cylinder temperatures are repeatedly exceeded over many cycles, pre-ignition can occur because carbon deposits build up, heating sufficiently to ignite the fuel-air mixture prematurely. Therefore pre-ignition results, rather than detonation, float, or lubrication issues, each governed by different mechanisms.

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