Maintenance & Technical > KX500 Original

carb drain hoses

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Friar-Tuck:
Hey JTM,
 Thanks for posting the pic's.  The only problem I ever had with vent hoses was when I had the brilliant I dea I was gonna rout them to the air box.
   Bad Idea  The pulses from the engine intake kept messing with how the bike ran.
  What was happening was the intake works just like the exhaust as far as the pulse from the air being drawn in through the carb and then the reeds shut.  The airbox is essentially a big air spring. when I routed the vent lines in the airbox the pulses would raise and lower the floats and fuel level.
      Keep your vents away from the air box and all is well.  Check them once in a while for either a bug making a home or mud clogging. 

There are guys who have installed check valves in the overflow and fuel filters on the vent lines to prevent ingesting dust in the carb via the vent  and overflow lines.   
      http://www.kevinscycleracing.com/intakeandcarburetor.htm
   
  Tuck\o/
       

mlstoner660:
Thanks tuck and jtm that was exactly what I was needing. I've got them all routed down in the same place by the rear shock. Didn't put the t back in but should be alright I think

jtm60:
no problem.  the only other little trick i used to do-and will do to this bike is to cut the ends of all the vent hoses off at a 45 degree angle instead of leaving them straight cut..they tend to stay cleaner and dont get plugged up so easily.

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