2008 6.7 Fuel Pressure

[Justin P.]

2008 Ram 3500 at idle has 4-5000 psi rail pressure. Depending on how hard you accelerate it will climb to 12000 or so on moderate acceleration then fall to 2-3000 psi before picking itself back up. Same thing at cruising speed, when you get to a hill and roll into throttle it will fall to 3000 psi then catch itself. It has a new fuel filter, where do I start?

 

[DonFitzwater]

Let’s start with some basics. What is your low fuel pressure? How many miles? Mods? How old are the injectors?