Help! Rookie Question...

3 replies to this topic
  • tornado

Posted March 17, 2002 - 09:32 AM


Hi all, this may seem a rookie question for all of you but I notice black smoke coming out of the exhuast whenever I full throttle my '98 WR4. Is there something wrong with the bike or have I over-revv? Please enlighten. Thank you.

  • Dodger

Posted March 18, 2002 - 07:34 AM


Could be time for new top end. Once the rings start to ware, they will allow some oil to get through and burn with the gas, thus the smoke :) !


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  • Ronin

Posted March 18, 2002 - 09:15 AM


she is probally just running rich, just make sure to check your oil level alot. In my past experience, black smoke is simply too much fuel, white/blue smoke is oil.


  • yamaha.dude

Posted March 18, 2002 - 10:47 PM


Exactly Ronin... white blue smoke is oil, and Black is too much fuel i.e. rich... try a smaller main jet...



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