Cm570 engine brake vibration and weak jakes

[Marat]

Appreciate your input Rawze

Cams and rollers all look great no flaking or any damage to anything there.

Brakes do activate by the ecm as well, however Im just not sure if cylinder one is doing anything at all. What concerns me is that the other 5 rockers have a good amount of oil coming out of the caps but number one looks very weak.

Im wondering if that is because number 1 is meant to come on with chlinder 4 5 and 6 for it to function properly or if something is actually wrong with it.

Im planning on doing the injector leak down test today as well as test all 3 solenoids maybe swap them around as well.

Turbo is original, I had it out recently when I replaced the manifold/turbo gaskets and had a look in the turbine side couldnt see any damage to the wheel.

Im just scratching my head about that cyl 1, if someone can confirm what its doing is normal then I could just leave it alone and move on.
My thoughts were that if that cylinder isnt working with the rest it could through everything off balance and be one of the reasons for the vibration Im getting.