Coolant being pushed out the overflow

Hi all John from Western Canada. I have a 2013 KW T800 with the MX13 Paccar engine and 800156 km or 500000 miles. The issue is coolant being pushed out the overflow bottle, the head and gasket are good piston liners and block are good so what I am asking is has anyone had this issue and the cause was the Air Compressor causing the engine to be pressured up and causing the coolant to be pushed out. I know a faulty Compressor can over pressure the engine and push oil out the dip stick or filler tube but haven't seen it cause coolant from the overflow. Has anyone dealt with this and was the Air Compressor the cause of the issue?? I hope someone can help me out. Thank you

 

This has happened to my Volvo with D13. Head gasket on the compressor went bad and pushed coolant out the overflow. The wet tank also had coolant inside. The EGR cooler will also pressurize the cooling system.

 

I replace the air compressor and egr cooler still have pressure in the coolant

 

How much pressure do u have ? Is it blowing out of the overflow tank, when u go down the road?

 

Let it puke a little bit and see if it stops, usually after I dump coolant for something or another i overfill it and it wants to get back down to the level it’s happy at

 

at high idle trying to get to temp

 

now going to remove valve cover and check the torque on the head bolts.