01 Warrior 350 Off-Idle Hesitation?

[thebluebeast]

I have an 01 Warrior 350, stock motor with small bolt on mods. DG slip on, Zoom zoom carb, and a Pro Design Pro-Flow air filter kit. Today when I was riding, I noticed a slight hesitation off idle, to about 1/4 throttle. It spits and sputters a bit. I have a .150 main jet, and the needle is set at the 4th clip down from the top. I had a head pipe leak at the motor, I repaired that with a new gasket and noticed this problem more then before. I also recently picked up some 91 octane ethanol free gas, and I usually run 87 octane e10. I'm wondering if this effected it. Also, I wiped out the inside of my pipe today, just to clean it out. After riding a bit, I noticed it was very black. Plug looks black too, I'm pretty sure I'm
running rich. I had a few ideas to try, one was removing the airbox lid, the other was raising the needle clip. I also thought about doing the pen spring accelerator pump mod, not sure if that would help. One other thing, if I punch the throttle real quick, I notice the problem disappears. But if I hit it slow, it spits and sputters. Any ideas? Thanks.

 

[thebluebeast]

One other thing, this is definitely not the parking brake switch, it's fully deleted.

 

[lbjamm]

It's just rich. Try running without the lid. But definitely lean it out.

 

[thebluebeast]

It's just rich. Try running without the lid. But definitely lean it out.

I went out and rode a little today and also played with the pilot adjustment screw, I figured out that the hesitation was more towards 1/8 throttle then 1/4 throttle. I leaned it up a little and it definitely cleared up the hesitation, running a lot better. I hope this really was the problem, time will tell.

Thanks for the help anyways, I appreciate it!