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← TechnologyWhich risk increases when timed direct fuel injection occurs too early in engine combustion cycle?
A)Detonation due to pre-ignition✓
B)Bearing failure from crankshaft stress
C)Catalytic converter overheating
D)Reduced power from incomplete burn
💡 Explanation
When injection occurs too early fuel mixture compression heats excessively because it increases uncontrolled combustion raising pressure and temperature, potentially exceeding design tolerances leading to destructive detonation/knocking. Therefore detonation a real risk, rather than simply reduced engine power or other side effects.
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