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Old 09-16-2014, 02:59 PM   #93 (permalink)
XYZ
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Quote:
Originally Posted by Old Mechanic View Post
Abnormal is not being able to bleed the system until there are no bubbles and-or bubbles in the recovery bottle after the system has been completely bled. Those bubbles indicate a failure in the head gasket and those bubbles are from the combustion chamber.

regards
mech
Since you mention it, the problem I had may have been related to the head gasket. When I had the timing belt changed, the mechanic mentioned to me that the head gasket was worn a bit thin on one end. The car lost about a pint of coolant every two months, but there were no visible leaks, no vapor in the exhaust, just a very slight odor of coolant under the hood sometimes when hot. It was easier to simply add coolant to the reserve bottle to keep it at the right level. Since it only overheated under severe conditions, it was easier to rig the fans to cool it. Before I did that, running the heater on full blast also would bring the temp back to normal.
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