Does your DD15 sound like this in the morning? You may want to look at your valve adjustment.
11:04
Why Do Honda's Need Valve Adjustments?
9:18
DD15 valve adjustment Part 1 on a Freightliner Cascadia
18:06
Mechanic told customer it was a bad injector. Know what to look for. Before you spend your money.
18:25
Freightliner Cascadia DD13 DD15 DD16 valve adjustment over the head tune up lash adjustment
19:19
Can we bring this DD15 back from zero compression? This is why valve adjustments are important.
15:03
Valve adjustment on a DD15 Detroit
25:51
This Truck has Coolant in the Diesel Fuel! Lets Fix It.
10:07