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Which outcome occurs when biodiesel fuel transitions from liquid to solid inside an engine fuel line during winter?

A)Fuel pump cavitation due to viscosity increase
B)Injector nozzle erosion from crystal formation
C)Combustion misfire due to altered air-fuel ratio
D)Engine knocking induced by higher cetane number

💡 Explanation

When biodiesel solidifies due to low temperatures, viscosity increases dramatically because intermolecular forces restrain flow, leading to fuel pump cavitation from insufficient inlet feed. Therefore cavitation results, rather than other issues, which require specific combustion or mechanical failures irrelevant to bulk fuel viscosity increase.

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