YZ450F 2003 JETTING?? OR WHAT??

:devil: I JUST GOT A 03 YZ450F WITH VERY LOW HOURS AND IT RUNS 110% EXCEPT WHEN IT ILDING I GIVE IT TWO 1/8 THOTTLE BLIPS....WHEN I DO THAT IT STALLS OUT ANY ANSWERS?? ALL STOCK PIPE AND JETTING ............ :thumbsup:

what is your altitude? When you blip it dies ? accel pump adjustment may be needed. Check idle speed..what does the plug look like?

Mine did this until i adjusted the ap. Adjust your ap...do a search.

Start by adjusting fuel screw

:devil: I JUST GOT A 03 YZ450F WITH VERY LOW HOURS AND IT RUNS 110% EXCEPT WHEN IT ILDING I GIVE IT TWO 1/8 THOTTLE BLIPS....WHEN I DO THAT IT STALLS OUT ANY ANSWERS?? ALL STOCK PIPE AND JETTING ............ :thumbsup:

also put clip in 3rd position - stock is 4th -

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