hey ive just pulled down my vs 3.8l ecotec because thensump was full of water. there didnt seem to be anything rong with the head gaskets and ive had the heads tested they are fine. i pulled the timing cover off and that seemed to check out and suggestions?
inlet manifold?, cracked block?![]()
I am with AZK here, Inlet manifold gasket is a common one. But you should have seen the watermark in the valley where it goes past your pushrods and lifters.
Water or coolant? - some of my grandkids filled my mower fuel tank with water.