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← TechnologyWhich risk increases when a diesel engine's fuel injectors develop "coking" deposits?
A)Increased exhaust particulate matter emissions✓
B)Elevated coolant temperature from combustion inefficiency
C)Accelerated crankshaft bearing wear rate
D)Reduced turbocharger turbine lifespan
💡 Explanation
When diesel injectors accumulate "coking" deposits, the fuel spray pattern becomes uneven, impairing complete combustion because localized rich mixtures create more soot and particulate matter. Therefore particulate emissions increase, rather than other options like cooling issues, bearing wear or accelerated turbocharger wear which involve different failure modes.
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