History: Engine compression checked last year and found well over 10% variation in compression. Only 200 hours on the engine. Advised to have head rebuilt. There was carbonization and scoring. It was rebuilt. Due to time constraints could not use the boat since. Only used about 1 1/2 run hours. Last week the engine blew. Total disaster. Melt down of one cylinder. Had a warranty. Repair shop claims is was an injector that broke off and not their responsibility under the warranty. Yes, we are looking into a lawyer. <br /><br />Questions: <br />1) Would inspection of the injectors during the rebuild have shown the beginnings of failure or could it have failed so quickly? <br /><br />2) Could the cyllinder have failed first and the pieces that came apart broken the injector? How likely is that? <br /><br />Any other technical comments would be welcome.