I stummbled onto this board while looking for some help with my 88 150xr4. I searched out your earlier posts, but can't seem to find the answer.<br /> So, while fishing in a large body of water a couple of weeks ago, boat started to run real bad, I've always had that intermittant problem of dying out on take off, wich the enrichener would help (looks like lean condition from what I've read here). But it was running bad, no idle, top rpm at 4500, and obviously missing at least one cylinder. <br /> Today, while checking things out, I pulled the port bottom plug out and water just poured out. I pulled the head and dicovered that the steal portion of the head gasket had broken and a small peice found it's way into the cylinder, putting pock marks on the piston and head and flushing the cylinder with copious amounts of water. Worse, the cylinder sleeve wall is very bell-mouthed and scuffed.<br /> The head I can fix, being a machinest by trade, and I can do most any mechanical work needed. <br /> I'm sure a resleave is needed, piston and rings too, I'd press the sleaves myself, but the alumanim block scares me, probably let the dealer swap that for me.<br /> On teardown, what else do I look for as far as damage? Dose anybody have any opinion why this all happened? Too lean? Just old gaskets?<br /> Any help would be much appreciated.<br /> Dennis
