Hi everyone, I don't frequent this forum a lot but remembered something that I would like to try and find the answer to. When my dad and I winterized our 95 Seadoo GTX, we followed all the directions. We got to the part where the 'ski is running with the hose hooked up, and you have to spray in carb. fogging stuff until the engine slowly dies out on its own. Well when we sprayed in stuff, it started smoking really bad (normal with fogging spray, right?) and instead of dying out, the 'ski actually revved up and started red lining. We then shut off the water and the jetski. I thought I read somewhere in the manual that is it revs up instead of down, possible engine damage can occur.....when we pull in out later this spring what can we expect? I blown engine, or a start? Is the engine ruined or does anything think it might be alright? Anything we should do to check the engine for damage BEFORE we start it? Thanks,
it will probably be ok, 2 strokes will also do that if they have a vacuum leak and will go crazy till you pull the lanyard and then open the throttle wide open or it keeps running even without the ignition,,
if it's a vacuum leak when you shut off the engine it would have continued to run wide open, and most come from a leak in a carb base gasket or a loose pulse tube to the fuel pump. but you were able to turn off your ignition and the engine shut off so from what you said I doubt it was a vacuum leak, probably something with the fogging oil.
Let's get something straight about fogging an engine. It is not necessary to literally kill the engine with fogging oil. A slightly fast idle while spraying the stuff into the engine is fine. Turn the key off as you continue to spray. When the engine quites you are done. Pull the plugs and give a shot in each cylinder if you wish. You don't need to drown the engine with the stuff.