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← ScienceWhich risk increases when internal combustion engines experience pre-ignition?
A)Catastrophic engine knock develops rapidly✓
B)Complete valve float becomes persistent
C)Fuel injector blockages exponentially increase
D)Reduced pumping volumetric is consistent
💡 Explanation
Pre-ignition causes engine knock because uncontrolled combustion creates extreme pressure spikes; this is a form of detonation. The rapid rise in cylinder pressure damages components; therefore, knock will cause ongoing catastrophic damage, rather than other fuel-related or volumetric issues.
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