Thanks Dave, there will be a carbon test this morning, I will try and be present for this test. I guess if the exhaust gas pressure created the bubbles I would have to assume some coolant should show up through the exhaust.

Nnew stat was put in, old one was ok. Air was almost continuous as if the head gasket was blown. Again I do know the coolant fluid was ok and it was not overheating prior to rad flush

stealership suggested if i drive it i may blow a rad hose from the built up air pressure. must be a way to bleed the air recommended by a manual somewhere? Thanks for posting help Vibe people2005 Vibe 246k

My 2005 1.8 was in for service and the mechanic claims I need a head gasket. The car had never over heated, showed signs of coolant loss or coolant in the oil. But when he attempted to refill the coolant it would not bleed the air out. Is this normal? Please help