98 ZXI 1100 piston damage/ corrosion
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  1. #1
    PWCToday Newbie
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    98 ZXI 1100 piston damage/ corrosion

    IMG_2847.JPG
    Got a good deal for this zxi 1100 so decided I could fix whatever was wrong with it, previous owners did not know anything about it. When I opened it I found this piston chipped/damaged like shown but no scoring of the cylinder or anything. Also there was some excess oil in and around that carb and down in the crankcase. Any ideas what can cause something like this?
    Also I might *** there is a lot of white corrosion in the water ports of the cylinder head and the exhaust. Could there be a gasket leak or too little water flowing through causing the piston to overheat? Thanks for the help

  2. #2
    PWCToday.com Is My Home Away From Home
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    Re: 98 ZXI 1100 piston damage/ corrosion

    worn out crank seal,air leak ,carb too lean,restricted cooling system near this cylinder.
    Last edited by restosud; 10-22-2020 at 10:41 PM.

  3. #3
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 98 ZXI 1100 piston damage/ corrosion

    Show us a picture of the piston skirts


    Bill M.
    Horsepower == Speed, RPM != Speed



  4. #4
    PWCToday.com Is My Home Away From Home john zigler's Avatar
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    Re: 98 ZXI 1100 piston damage/ corrosion

    This was very lean, leading to the piston melting at the exhaust port.

    As stated above, could be crank seals, gasket air leak, carb/fuel delivery issue, etc.

    Go over everything, replace all fuel lines, fuel select, check tank pick ups, rebuild carbs/fuel pumps - use genuine Keihin brand parts, etc.

    Make sure you do a leak down test when you reassemble the engine.
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