I have been getting my 97 Monte Carlo 1000 ready for summer.I pulled the exhaust manifold and heads off cause I wanted to see the inside condition of the cylinders and pistons. I reassembled everything, and started it up, then turned on my flush kit.After running a minute or so, the engine stopped.Cranking it, I could tell it was locking up. I pulled the plugs and water shot out of the PTO side cylinder clear to the ceiling. I pulled the head again, and I think the inner o-ring blew out, filling the cylinder. I just got the o-ring shrank and reinstalled the head. Now when I crank the engine I get water squirting out of all three cylinders. Did I miss something when I reinstalled the exhaust manifold? It looks like the water is coming from the exhaust manifold into the cylinders. I do not even have the flush kit installed, and I can't figure out where all this water is coming from. I was going to try a compression test to see if I bent the rod on the PTO cylinder, but I can't do that till I get the water taken care of. Any ideas?