Most port-helix injection pumps on North American diesel engines are timed to which engine cylinder?
A) Always to cylinder 1.
B) Either cylinder 1 or 6
C) Always the highest numbered cylinder.
D) The cylinder closest to the pump.

Question

Quizplus · Accepted Answer

Most port-helix injection pumps on North American diesel engines are timed to either cylinder 1 or 6. This is because these cylinders are the farthest apart and so the pump can more easily time the injection for multiple cylinders using this configuration.

Most Port-Helix Injection Pumps on North American Diesel Engines Are