Grayracer follow up

1 reply to this topic
  • blakers213

Posted June 28, 2010 - 04:28 PM


I sure you don't remember but I have a new 2009 yz450f completely stock and it runs rough at a steady 1/4 throttle. You recommended unplugging the TPS and it worked. Then you suggested a richer needle a NLFP I think it was , anyhow it is coming in Wednesday, I work until Friday and I am racing Friday evening so I don't have a lot of time to play with it so what clip do you suggest to start at? I thing the stock needle is in the 3rd clip so should I try the richer needle in the 3rd slip also?

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  • grayracer513

Posted June 28, 2010 - 06:10 PM


NFLP. The needle is richer from 1/8 to 1/4 throttle only. Past that, it's the same as your original. Start with the clip in three.

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