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Which outcome occurs when a diesel engine direct injector experiences insufficient pressure during start-up?

A)Atomization worsens, causing misfire
B)Valve timing becomes marginally retarded
C)Turbocharger bearings undergo oil starvation
D)EGR system flow becomes elevated

💡 Explanation

Poor atomization causes misfire because reduced physical pressure through the injector nozzle results in larger fuel droplets, rather than a fine mist. Therefore, combustion is inhibited, rather than improved valve timing or affecting turbocharger lubrication or the EGR flow.

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