Cm2250 Air compressor or head gasket ?

[Lonestar10]

probably need to pressure test the system with a pressure test kit take system to 20psi and see if pressure drops. if it does then take off pipe at back of EGR cooler and set a tuperware bowl or something similar under the back of it and pressurize again see if anything appears. if not and pressure still drops proceed to remove oil pan and pressurize and have someone bar the engine over while you look up the bottom of every cylinder looking for water coming out.

also
you may have had a bad head on your compressor dumping a bunch of air into the coolant system. ontop of that you might just have a small headgasket leak.."not sure on the comman rails if the injector bores can leak or not into cooling systems like an 870-871 injector cup can"


even if it turns out its just a small head gasket leak youll want to get that fixed as over time it can etch the cylinder block making it un repairable and not longer good for an inframe.


also there are kits for testing for combustion gases coming out of the cooling system. although they are not right 100% of the time but could possible tell you if its just air in the system or if the headgasket has let go.