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I have 12’ B52 23 with ZR409 Single exhaust outlet with secondary outlet. Just installed FAE Exhaust. Tried out today at lake. After putting boat back on trailer I noticed the secondary exhaust outlet butterfly scupper was gone. I am guessing pipe increased pressure in system and it blew out. Looking for feedback as to why this would happen and if I should be concerned. Will thus keep happening if I replace? Can I use the boat with butterfly scupper missing?

Ok guys... last summer I had an overheating issue that plagued me all season. Last season's threads: http://www.mbboatowners.com/index.php/topic/4688-help-overheating/ http://www.mbboatowners.com/index.php/topic/4813-2004-pcm-57l-excalibur-330-mfi-running-temp/?do=findComment&comment=60382 2004 220V PCM 5.7L 350 I think i've narrowed the cause down to the exhaust manifold/risers. I'd like to try doing a full vinegar flush to see if that solves my issues before taking the whole exhaust manifold apart and dealing with that potential chaos. (I'm NOT a mechanic... also not an idiot... but not a mechanic) My question... cuz I'm crazy paranoid... is how exactly, step by itty bitty step, do I do it? I'll be doing it myself with no help so the more info you guys can lend the better my odds of success. I'd also like to post a detailed thread complete with video/photos after (unless it already exists) for others like myself so they don't need to go through what I'm going through at the moment. so... -what holes do I open... -what holes do I close... -what holes do i pour into... -particular type of vinegar... -how much vinegar, how much water... -fake a lake or no fake a lake... -what parts do I remove... -what parts do I replace... -how long do i do it... -how will i know if it works... -warning signs, things to watch out for... -run engine, don't run engine... -warn the neighbors of potential stink cloud... -etc. These are the questions that keep me up at night. Please help with advice, wisdom, links, photos, videos, wise cracks/comments etc... I'll take anything cuz my family's happiness this summer depends on it! My boy, only 9yrs old is counting on his father to come through. My teenage daughter is counting on her father to be the "coolest" dad ever. My wife, well, I fear that no boat for the summer may be a deal breaker for her. No pressure, but a warning that I'll be blame shifting onto everyone else but me if I can't get this solved for my wife and kids. Just sayin'. Thanks in advance. P.S.: The videos I've found so far don't exactly give steps to the process.