waveblaster problem

[waveblaster146]

Recently I put a mod pipe on my stock B1. Today i brought it out to the lake to get the pipe and carb all dialed in. I got it all were i thought it should be and it ran amazing for about 30 minutes. I did some spark plug readings and everything looked good. A Little later i went back out and it was going good, then all of a sudden it seemed like it was starving for fuel and kept bogging when i got over half throttle.

I messed around with carb adjustments and couldnt get the thing running like it was earlier in the day. it felt like it was out of gas. But i had a full tank

I am running factory recommend jets

does anybody have any ideas about my problem and how to fix it

 

[dirtyoz]

Pull your plugs first.

 

[donjonald]

Fuel filter?

 

[crammit442]

Since you just installed a pipe, make sure you don't have an exhaust leak.