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hy250r
12-19-2006, 08:10 PM
I just put a HRC cam in my 05 450r. it also has the HRC lid with a Sparks full exhaust. I have a 190 main, and im using the hrc needle on the 3rd clip, with the fuel screw turned 2 1/2 out. if i put choke on it will run, if i turn choke off it wont run?? so i tried raising the fuel screw to 2 3/4 turns out and does the same thing. the only thing i could think of changing is the pilot? but is there something i may be doing wrong? would the main jet need to be changed?

Colby@C&DRacing
12-20-2006, 08:55 AM
The pilot jet stock is to small. But if it won't run at all with out the choke, it sounds like your pilot curcuit is plugged