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Discussion Starter · #1 ·
I just got a new YFZ, new to me, its an 04 with all the TPS and that crap unplugged but the TPS wires from the carb are cut. It was jetted 165m and 48p when I got it. It's a WR 13.5 motor with White Bro's Carbon full system. I took the airbox off and used stock intake with the Curtis Sparks super charger insert and a Pro Flow filter with an outerwears on it and jetted it 172m and 45p 2 turns out on the fuel screw. I've went in and out on the screw every wich a way you can and had a 175m in it and half a turn out on the screw and it ran good but it would still spit and sputter at a low idling speed but immediately clear up when on the gas. It idles fine and revs hard, so im wondering if its the TPS crap being cut?
 

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it shouldnt be the TPS it will either run fine or not run at all. you have another problem, but its not the TPS
 

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Discussion Starter · #3 ·
Yeah it was a slightly bent needle haha.
 

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that'll get ya, runs good now?
 
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