X15 noise and lack of power on a hard pull.

[Jrloar]

(12-25-2019 )tree98 Wrote:  30K mile oil changes, 2.79 rears, and that auto $hitter lugging you down all the time, your engine is being greatly abused. You don't have to believe it but it's a fact.

I listen to everything that I hear. Like I say. I am a mechanic but not specifically Cummins. I came here because you guys run them. I haven’t. There is times I would take the word of drivers over a mechanic. How much does a mechanic drive the engines. And like stated. No load rev is totally different than pulling 80k up a 9% 2 mile grade. Sitting in neutral the engine makes no noise. However if the truck misses a gear and it revs to catch it again I can hear it. It is much snappier when the computer does the rev though

Air compressor? That’s possible I guess. I could unhook the air intake to the compressor and see if the Sound changes. I do have one problem, in my mind it’s valve train noise. So it’s hard for me to look someplace else. However I came here to get thoughts and advice. So I will try the air compressor.