This is actually an 04 but I believe its the same as an 03 4.7. The truck came in for a power steering leak and the customer mentioned it was running rough. It was quite low on oil and pretty dirty so I performed an oil change. I noted a valvetrain tick from the right bank. Listening to the cranking cadence you can hear there is a mechanical issue in the engine
I performed a relative compression test and accidentally synced to cylinder 2 initially. Problem was a cam follower had spit out of number 4 exhaust likely due to a collapsed lifter. I temporarily reinstalled it to see how it would run afterwards. Parts are on order.
Here is part 2.    • 2004 Dodge Ram 1500 4.7 Lifter Replac...