Isx 600 series coolant loss

EGR is exhaust gas that gets cycled back into the engine's intake in order to control the NOx pollution. The EGR cooler uses engine coolant to cool that exhaust gas. When the cooler starts leaking, it sprays coolant directly into the engine's intake. Burning coolant shows up as white smoke and sweet smelling exhaust.

 

If they remove the cooler, or any connection between cooler and intake and there's coolant in the piping, the cooler is the culprit.

 

I would guess that popping off the intake from turbo to charge air should work. Should see streaks in the tubing and its the easiest to take off

 

Check EGR first. Injector issue could be result of it drinking coolant.

 

Probably not. The EGR on the majority, if not all, engines is mixed in at the intake manifold. You won't see any coolant in that pipe. Not unless the Signature 600 uses a water cooled turbo, which I honestly don't know if it does.

 

Pull this pipe and see if it shows signs of having coolant run through it.