Hi all. My AWD Astro is makung steam in the exhaust. I dont find evidence of water in the oil. The engine runs well enough, it just makes steam and uses up water and then overheats. I wonder which is most likely; a leaky head gasket, or a leaky intake manifold to head gasket?
Is one more common?
""(oYo)""
Some newer chevy engines have plastic intakes. Sometimes they crack and leak water into the engine. This is a very bad thing. I don't know about the vortec six though.
coldfire
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