yz400f 98 overfilled oil and there is now oil in cylinder HELP

4 replies to this topic
  • p48ker

Posted April 01, 2013 - 02:46 PM


hi i overfilled oil and somehow it has leaked into the cylinder plug was oily
when i took plug out and kick over clean fresh oil squirts out of the plug hole
how can i clean this out and get the bike running ?
any suggestions welcome

  • f150jokerstyle

Posted April 01, 2013 - 03:14 PM


I don't know how you did this but push the kicker over to TDC(with plug out) and use a turkey baster or simply turn the bike over and let it drain. You may want to figure out how the oil got in there. I.E. horribly bad valve guides something of that nature. Does your bike usually smoke really bad at start up?

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  • p48ker

Posted April 01, 2013 - 06:28 PM


I only just bought it so have not got it running yet
thanks for the idea
i think i will drain all the oil take off rocker box dry that out
take carb off and clean up inlet with starter fluid, then may dump some gas down plug hole and clean it out with kickstart ??

  • f150jokerstyle

Posted April 01, 2013 - 07:20 PM


Should work I suppose. Like I tell some of the guys at my work though don't just fix the problem but also try and figure out what caused it. :prof: It is easy to get wrapped up in fixing the problem at hand and over look the cause.

  • p48ker

Posted April 02, 2013 - 03:33 AM


I guess the rocker box filled with oil and it seaped past the valve guides, if I can get it running I can asses how much oil is burning and then fix the next thing

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