With 160 to 215 horsepower and up to 440 pounds-feet of torque, the Dodge Ram 5.9 Cummins 12V featured a direct injection system with a mechanical Bosch P7100 injection pump and injectors.
While the mechanical 5.9 Cummins injection pump is ideal for modifications, it isn’t immune to problems. The pump’s spring can break or lose its strength, and the overflow valve is prone to leaks. Along with inadequate fuel pressure, these issues could cause hard starts, poor performance, a loss of power, misfires, and rough idling. +Read more