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← TechnologyWhich outcome results when a diesel engine's fuel injectors malfunction, causing excessive fuel delivery?
A)Catalytic converter overheating and damage
B)Crankshaft bearing wear from fuel dilution✓
C)Valve timing misalignment from soot buildup
D)Turbocharger overspeeding from increased EGT
💡 Explanation
When excessive fuel is injected, incomplete combustion occurs because of insufficient air, leading to unburnt fuel seeping past the piston rings and diluting the engine oil. Therefore, crankshaft bearing wear results, rather than catalytic converter, valve timing, or turbocharger issues which arise from different combustion problems.
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