Random miss cm2350

[Lonestar10]

Well if it was just the stumble it wouldn't bother me much, but there is what I would call a fuel knock at 1300 rpm and above that gets louder with rpm.

About 50k on overhaul where head, cam, rockers, and everything except for injectors is new.

Last weekend did overhead Incase valves got to tight but that didn't change anything.

Was fooling around last night in the bunk doing a cut out of 1 cylinder at a time because apu 120v conked out and I needed heat "carrier". At 900 rpm idle the truck was shaking due to miss fire.

While doing the test cylinders 1,2,5,6 would make the shake worse when cut off. But 3 seemed to make no change and 4 would make the engine run smooth as silk

So I'm thinking 3 or 4 is my issue. I've got a new injector on order with a few new quill tubes Incase I guess wrong and need to change the injector to a different cylinder.