First let me start by thanking whomever is responsible for this site it is quite informational for us novice "boat mechanics"(and I say that lightly)<br />I have, as you requested, researched the site to see if I could find the solution to my problem before i posted and there was some vague references to this but I could not find what I should do now.<br />It started with an overheat alarm going off and to make it quicker i will just list what i have done - new Thermostat<br /> new impeller <br /> new water pump<br /> Then- new water jacket<br /> had the head cleaned and sand blasted<br /> all new bolts and gaskets to put it back together (because in taking it apart i broke a bolt the water jacket (from the thermostat housing) and broke one in the head!<br />All this and it wont run idle for five minutes without overheating. It is "peeing" but there was a clog of something when i first started it, which makes me beleive that it is somewhat clogged. I don't know how to flush it out properly to eliminate this and see if it is something else? 