2013 ProStar over pressures the coolant tank…

Maxxforce 13. Excessive pressure getting into the coolant reservoir. EGR blocked off. I replaced the air compressor.. Not sure what else it can be.

 

Even if it’s blocked off? (for testing purposes?)

 

Thank you! How often do you see a cracked head on a MF13? I didn’t have any problems until I took a small hose off the top passenger side of the low temp radiator to change a clamp. Coolant shot out. I put it back together and then I had issues. Idk if it a coincidence or what. Would the air to liquid interstage cooler cause issues?

 

I’m hoping it’s just an air pocket that’s being stubborn at this point. I’ve already waisted money on a compressor. Maybe I should get them to drain the system and refill it under vacuum the proper way…

 

Just wanted to give an update on my coolant pressure issue with my MF13. While taking the head off the dealer said they’ve found a broken head bolt and they saw a sign of compression leaking pass the gasket. They’re gonna check the liner height also. The head is at the machine shop getting pressure checked. Just wanted to ask you all if the broken bolt/head gasket issue can cause a coolant pressure issue? The engine is dry deck so I’m not sure.. Thanks.