6.7 Cummins erratic tick near turbo/egr cooler

I think the powerstrokes and duramax engines have roller lifters
Roller vs flat tappet is a different discussion than solid vs hydraulic. The number of times this gets blurred on the cummins discussion groups is mind blowing.

Diesel pickups have gotten quieter in phases. Exhausts got quiet, which meant they seemed really rattly. So they went after the injectors, added pilot injections, and valvetrain noise. More insulation under the hood, etc. Now they are going after front drive noise. Solving one unpleasant noise leads them to the next.
 
Send the video to DNR Customs, Derek Rose is one of the best with 5th Gen’s. Maybe he can pinpoint the audible tick from experience. Not all Dealerships have experienced diesel techs these days, somewhat of a dying breed.
 
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