Air in coolant line suggestions?

[JonezyBones]

Recently put a new top end on my 12 pro and put all new gaskets in. New cylinder base gasket, new top end o-rings etc... I purged the system with the t stat at the highest point. Went for a ride today and noticed that the antifreeze level wasn't going up or down but it sure was bubbly. It's not changing colors except by getting lighter colored after running but it settles back down to a normal green after it sits a couple minutes. So my question, is the cylinder base gasket not properly sealed? Just doesn't make sense because it's not loosing coolant and it's not burning any. No white smoke and no sweet smell of antifreeze. Still possible that there is air in the system?

Tried a search but didn't really find someone with the same symptoms
Thanks!

 

[JonezyBones]

https://youtu.be/UtKt9boAshE



This is a video of the bubbles at engagement rpm

 

[rags319]

Elivate the front in up. I pull it onto my trailer ramp. Take the bottle cap off and let it run. When stat opens you will see air bubble out.

 

[jasona86]

I had the same thing going on a while back. Put a pressure tester of the coolant bottle. If you build pressure when you rev up you have a real problem. My coolant never got dirty or changed color but it ended up being a undetectable crack in the cylinders. I changed all gaskets multiple times with no luck and even changed the head. I talked to a dealer who said he had one with the same issue and it ended up being over torqued cylinder bolts. Mine did spit out the overflow slowly after pressure built up. check the overflow hose and see if it has any amount of coolant in it. The cylinder have up to 125lbs of pressure while your cooling system only has around 12. This can cause air to go into the coolant but not coolant will not enter the cylinders. Good luck let us know how you make out.