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Which outcome occurs when thermal stress reduces the flow of lubricating oil within a high-pressure fuel injection pump?

A)Increased injector nozzle clogging
B)Optimized fuel-air mixture burn
C)Reduced exhaust NOx emissions
D)Improved cold-start performance

💡 Explanation

Reduced lubrication allows increased friction and heat; therefore, deposit formation occurs. This initiates fuel polymerization via thermal decomposition in the injectors due to prolonged stiction during injection rather than normal spray atomization. The resulting injector orifice clogging impacts engine function.

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