99 WR400 question

3 replies to this topic
  • sdg8569

Posted March 03, 2009 - 05:03 AM


Why is the vent line from the top of the engine run into the air box on my 99 WR400? My 05 yz450 runs down the the front of the engine and dead ends under before the shift lever.

  • Bamster

Posted March 03, 2009 - 05:57 AM


If you stall in water and try to kick it over with the rubber hose submerged, it will suck in water.

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  • sdg8569

Posted March 03, 2009 - 11:20 AM


Thanks. I guess I can vent it without going into the air box since its a supermoto bike.

  • bluebreadtruck

Posted March 03, 2009 - 09:42 PM


factory they vent down, but someone probably ran it to the airbox...i did with mine to keep it high and dry and added a filter


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