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Which outcome results when an electronic fuel injector remains energized open in gasoline engine?

A)Hydrocarbon contamination of lubricating oil
B)Premature catalytic converter failure
C)Increased formation of NOx pollutants
D)Detonation due to lean air-fuel mixture

💡 Explanation

When an injector remains open, excessive fuel floods the cylinder because the solenoid valve malfunctions, exceeding designed fuel pulse width and cylinder capacity, This leads to unburnt gasoline seeping past piston rings into the oil sump. Therefore, oil contaminates, rather than converter failure, NOx increase, or detonation which depend on managed combustion.

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