Dodge Cummins engine use the Bosch VP 44 diesel pumps, and not only is it one of the most expensive components of the diesel fuel system, but they are also know to have issues. As per the Cummins website. “The Bosch VP44 has not been as reliable as we had hoped”.
Bosch VP44 injection pumps perform four basic functions:
1. Producing the high fuel pressure required for injection
2. Metering the exact amount of fuel for each injection cycle
3. Distributing the high-pressure, metered fuel to each cylinder at the precise time
4. Varying the timing relative to engine speed.
The Bosch VP44 is an electronic rotary distributor pump that can vary fuelling and injection timing, and also contains fuelling, timing, and diagnostic data.
The best way to avoid failures of the Bosch VP44 injection pump is to prevent them from happening. Purchasing a replacement lift pump, one that is of a better quality than what comes from the factory will help. If that option is too costly, you can also install a gauge to monitor your fuel pressure. With the gauge you will be able to know when your lift pump is going out and can easily fix the problem before you lose the Bosch VP44 injection pump.
Posted by: CROZON-TBD6143