Car has 107000 miles, 4 cylinder 2 liter auto. Noticed when car is shut off there is a large amount of air bubbling up through the overflow tank. There is no antifreeze in the oil, and does not use oil. Rad & system has been flushed. Plugs are burning normal with no signs of any antifreeze burning, no white smoke from tail pipe. Added leak seal can, and rad holds pressure. Not sure why the bubbling back to the reservoir. Any suggestions on source to look for this and should I be concerned? Worst case is my worry of a head gasket failure pending? Car has been doing this for a year or about 8000 miles. Car did not run hot (overheat) in the summer.
Monday, January 29th, 2007 AT 11:30 PM