Technician A says that diesel engine that will not crank could be caused by a loose primary fuel filter permitting air to be drawn into the fuel. Technician B says that a diesel engine that will not start in extreme cold weather could be caused by low cetane fuel. Who is correct?

Question

Quizplus · Accepted Answer

A diesel engine that will not start in extreme cold weather could indeed be caused by low cetane fuel, as cetane affects the ignition quality of the fuel. However, a loose primary fuel filter causing air to be drawn into the fuel would not prevent the engine from cranking; it might cause starting issues, but not cranking issues.

Technician a Says That Diesel Engine That Will Not Crank