Over heats but dosen't lose water.Dose it need a head
gasket and how much would it cost. firstname.lastname@example.org
Chevrolet Q&AAsk Your Question
2002 Chevrolet Astro Question: Head gasket
Answer #1patrick mannion from Greg Solow's Engine Room, April 20, 2011, 18:36Master
The most accurate way to test for a blown head gasket on a gasoline engine is to test for the presence of carbon monoxide in the cooling system. Snap-On, Matco (part # CO 2000), and Napa sell a tool to check to carry out this test. Another link to a supplier of this tool is http://www.etoolcart.com/combustion-leak-detector-lis7550.... Carbon Monoxide is only present if there is a blown head gasket or cracked cylinder head. http://www.arrowheadradiator.com/head_gasket_or_combustio... I think the Napa part number 700-1006. http://www.blockchek.com/instructions.htm . Signs of a blown head gasket are coolant loss (frequently have to top up the coolant level of the engine without seeing an obvious leak), experiencing over heating or rough engine running or the presence of white sweet smelling steam from the exhaust. A badly blown head gasket may allow engine coolant and oil to mix.
For price of repair check the estimator link
Answer #2stantaz September 06, 2014, 17:59Rookie
thermostat ,blown head gasket will cause a missfire and more than likely leak coolant !!