I posted this last night but don't see it here, I'll try again. I searched your older posts on this subject but I still need some answers.<br /> My 88 150xr4 has had that intermittent getting out of the hole lag that was helped by enrichening, I guess this is a lean condition from what I've read here. Anyway last weekend on some big water up here in the northeast, the thing started to run really bad. No idle,4500 rpm tops, and definetly down at least one cylinder.<br /> While checking out the motor on the ears,I saw lots of steam coming from the exhaust. Pulling the plugs revealed much water coming from the port bottom cylinder. The head gasket had come apart, dropping a small section of the steel ring into the cylinder, dinging up the piston and head. Worse, it looks like the washdown while running let the rings do a number on the sleeve, leaving it bellmouthed and scuffed.<br /> I can repair the head, no problem, and I'm decent mechanically, so I can do most of the repair my self. The only thing that I need done is to swap sleeves, maybe a dealer.<br /> So questions: What else do I look for as far as damage? What does anybody think is the cause of this? To lean? Old gasket(original)? Is there a recommendation as to when these gaskets should be replaced? Is there an outside shot that I can claim this on my Insurance?<br /> Thanks for any help,<br /> Dennis
