ISX 870 Jake brake is weak

[DKenworth]

(08-28-2017 )marek4792 Wrote:  Was the timing set properly with the timing wedges and the crank pin when reinstalling the timing gears? Does the engine sound any different after the job then before? Does the engine brake work normally in no. 3 position?

The guy who did work on my engine works for cummins dealer, it was his sidejob ill say. Engine does sounds a bit louder to me , but u can hear it only outside. I have 2 position jake brake so when i switch to 2, it stayz the same.