Two technicians are describing pressure control components of common rail fuel. Technician A says if the high-pressure pump is removed, timing marks on the pump gear and camshaft gear are used to correctly time components during reinstallation. Technician B says that late-model high-pressure pumps are often timed so the peak pressure pulses are phased with the injection events. Who is right?

Question

Quizplus · Accepted Answer

Both A and B are correct. Technician A is correct because timing marks on the pump gear and camshaft gear are used to correctly time components during reinstallation. Technician B is correct because late-model high-pressure pumps are often timed so the peak pressure pulses are phased with the injection events.

Two Technicians Are Describing Pressure Control Components of Common Rail