The coolant system needs to be checked for the presence of combustion gases (possible when a engine has a blown head gasket, warped cylinder head).
There are several ways that you can do it yourself. Many autoparts stores will sell kits which will determine if there is combustion gases present in the coolant. If the combustion gases are present the most likely cause is a blown head gasket (but there are other tests to run to be sure BEFORE you start the repairs.
Monday, February 24th, 2014 AT 5:42 PM