I understand what you are saying. The quad was probably running rich before the new pipe. I ditched the stock one right off the bat. Anyway, I will the run full throttle plug test first and follow the rest of everyones reccomendations. I am going to wait until I modify my airbox and filter like raptorterry did. Also, how do I remove the needle from the palstic slide? and how many turns do you have your air screws set at? I will try adding and subtracting exhaust discs too. Thanks everyone. I am learning alot. I just wish this thing had a Holly carb!!!!!

does anyone know of any sites with carb diagrams?

 

The disks are for adjusting power output, ie, low end torque vs high end rpm's, not for adjusting your carb mixture.

 

hey why are all these people in here causing an uphoar and the ones who the cause of the problem aren't even YAMAHA riders. i'm not naming names but come on you guys know who you are. go cry and whine and raise hell in your own little thread and let us the YAMAHA guys help our fellow YAMAHA riders thank you

oh and blueleader i would listen to what no2strokebs has to say

but not to leave out the guys who do ride other than yamaha and have contributed to the dicussion thank you for being sincere for the rest of you well go get a life fighting with people on-line where you two can't get face to face that is a *****'s way of fighting you know who i'm talkin too

 

I don't want to add fuel to the fire. But would it make a difference in the color of the spark plug if I did the full throttle plug test while the quad was in neutral or with the wheels blocked up instead of riding it at 3/4 to full throttle for 30 sec. The reason I'm asking is that I do not have an area near my home where I can run the quad at full bore for 30 sec and because I feel I lack the skills to adjust my carbs. I hated working on the carbs of my KX, it seemed like I could never get it ajusted just right.

 

I think you should to run the engine under load rather than in neutral.

 

You want to have it under load, not in neutral.