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← TechnologyWhich risk increases when an overfeeding solenoid in a turbocharged diesel engine malfunctions?
A)Catalytic converter overheating from fuel
B)Cylinder knocking from advanced timing
C)Injector nozzle clogging from deposit build-up
D)Turbocharger shaft failure from overspeed✓
💡 Explanation
When the overfeeding solenoid malfunctions and adds excess fuel, overspeed occurs because extra fuel creates excessive exhaust gas flow and spins the turbine beyond design limits, potentially leading to turbocharger failure. Therefore, turbocharger shaft failure results, rather than overheating, knocking or clogging, which entail different fuel/air balance mechanisms.
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