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Winterizing 99 22i 350 Mag MPI

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    Winterizing 99 22i 350 Mag MPI

    Always had I/O's.... obviously other than oil & filter, fuel/water separator.... I pulled 4 petcocks... one on each manifold... one on each side of the block...there was one also on the bottom of the fuel cooling unit, however it seemed to be more like a "shutoff" only wanting to turn 90°. Any thing else I'm missing? Hoses that need removed? Any advise would be great!

    #2
    You need to get that plug out of the fuel cooler. It should be the same as the other blue plugs. Pull the hose off the end of that unit as well. There is also another blue plug located on the underside of the circulating pump line on the front of the motor. I'll try and get a pic later if you need.

    Do a search for "winterizing" on here. There are tons of good tips even if it is from a different boat. A good thorough draining and fuel conditioning is all I've ever done and I've never had a problem. My boat has always lived inside though so...
    You'll get your chance, smart guy.

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