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Which outcome results when high cylinder pressure overcomes proper fuel-injector seating?

A)Uncontrolled cylinder pre-ignition occurs
B)Exhaust valve spring failure occurs
C)Fuel reversion into the rail occurs
D)Oxidation catalyst poisoning happens

💡 Explanation

Fuel reversion happens because pressure overcomes the check valve, resulting in backflow or "fuel reversion" within the fuel rail; therefore fuel rails pressurize rather than preventing valve or catalyst component failures, which occur due to separate stressors.

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