If you’re working with a 12-valve Cummins, understanding how the P-pump works is a must. In this video, we tear down a Bosch P7100 and walk through every part of it so you can see exactly what each component does. From the plunger and barrel to the delivery valves, tappets, cam, rack, and governor, we explain how it all ties together to control fuel flow and timing on your truck.
This isn’t just for show. We’re explaining it the way you’d talk about it in the shop. We cover the differences between the common pump cams like the 160, 180, and 215. We also get into timing, injection rates, and what really changes when you upgrade parts inside the pump. Whether you’re trying to build a clean daily driver or squeeze more power out of your build, knowing how your P-pump works gives you a serious advantage.
We also go over AFC tuning, throttle response, governor springs, and the way the pump adjusts fueling based on load and boost. If you’ve ever messed with delivery valves or tried to adjust your rack plug without really knowing what it does, this will help make a lot more sense of it.
This video is perfect for anyone looking to tune their 12-valve Cummins, upgrade to a bigger pump, or just understand the mechanics behind one of the most iconic fuel systems in diesel performance. Drop a comment if you’ve got questions, and make sure to subscribe for more real-world diesel content from the guys who live and breathe this stuff.
Power Driven Diesel is a specialty performance shop engaged in the engineering and development of high-performance turbo diesel technologies.
Contact Us:
435-962-9555
info@powerdrivendiesel.com
https://powerdrivendiesel.com
https://www.facebook.com/powerdrivendiesel/
https://www.instagram.com/powerdrivendiesel