Js550 rebuild its alive
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  1. #1
    PWCToday Newbie
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    Js550 rebuild its alive

    Ok I got the js550 for $100 it hasn't run from what the guy said for at least 10 years

    Checked the compression mag 140 pto 142

    I rebuilt the bn38 and changed all the fuel lines.

    Sprayed fogging oil in the cylinders and it started up it smokes like crazy shut it down let it cool and started it again adjusted the carb this time let it cool again
    Started a third time gave it mid throttle and this green stuff was coming out of the exhaust
    is it crap in the exhaust system ???

    IMG_0541[7034].JPG

  2. #2
    PWCToday Newbie Galmo's Avatar
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    Re: Js550 rebuild its alive

    Could be gunk that was sitting in the water box.

  3. #3
    PWCToday Newbie
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    Re: Js550 rebuild its alive

    Quote Originally Posted by Galmo View Post
    Could be gunk that was sitting in the water box.
    at first it was just black oil then after revving it this crap came out I'm going to take out the water box and try and clean how would I do that??

  4. #4
    PWCToday.com Is My Home Away From Home
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    Re: Js550 rebuild its alive

    Just run it. It will clear out rather quickly.
    Riding mostly Lake Austin

    1984 JS440 -- 1989 650sx -- 1991 X2 -- 1992 750sx -- 1995 900zxi (qty 2) -- 1995 X2

    Quote Originally Posted by cujo View Post
    God intended PWC to be two strokes, as well as dirt bikes, snowmobiles, and chain saws....

  5. #5
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: Js550 rebuild its alive

    Its residual water mixed with oil that was sitting in the waterbox. Nothing to worry about.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

  6. #6
    PWCToday Newbie
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    Re: Js550 rebuild its alive

    Quote Originally Posted by Myself View Post
    Its residual water mixed with oil that was sitting in the waterbox. Nothing to worry about.
    would that explain why its smoking so much also?

  7. #7
    PWCToday Newbie Galmo's Avatar
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    Re: Js550 rebuild its alive

    Yeah like said above nothing to pull the water box out for. Just run it clean

  8. #8
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: Js550 rebuild its alive

    Yep.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

  9. #9
    Frequent Poster Riverrat650sx's Avatar
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    Re: Js550 rebuild its alive

    The fogging oil will make it smoke like crazy too.

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