Bubbles in antifreeze

How about friends, I have a Stratus 2.4L 2001. BUBUJEA the refrigerant deposit. The engine has no failure or heated. Why bubble in the deposit? My email . Thanks for your help.

It looks like a cylinder head, doesn't they lose antifreeze? Does the antifreeze have spots? I will have the oil filling plug and see if it has white pasta and in the oil rod too.

I thank you for your attention friend. I reviewed both in the deposit and in the oil ball if they have indications of oil or water respectively, but they are fine. Do not emit white smoke by the exhaust and compression is correct (128 psi even), it does not lose power nor does it have fault codes. The car works well, but it worries me the bubbles that it takes in the tank when it is hot. Nor has antifreeze leaks.

I do not know the engine that is exactly, but I limit you the deposit of the anticonjelante? Or do you only see bubbles, will not carry a fine tube of entry to the deposit to recirculate the liquid, do you have the level in cold or it is low?

Hello lucogo ... Look there if you have no loss in the water circuit where the circuit could enter the circuit ... then I would throw myself to look at the tapa's lid that there the air valve does not open and accumulates you a lot of pressure, better check the two tapas ... luck !!