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2001 7.3 CCSB 4X4 2016 6.7 CCSB 4X4
186 Posts
Discussion Starter #1

I recently changed injectors, cups, GPs and HPOP as well as rebuilding turbo, roughly 1K miles ago. I pulled my travel trailer(8000 Lbs) for the first time since all the changes and I have noticed something odd. While slowly letting off the pedal injector noise gets very loud for a few seconds then goes back to normal. If I lightly feather the pedal, I can get it to not do it when letting off. I have good HPOP and fuel pressure.

Any ideas or thoughts?

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