Hello.

I have 2001 klr250. Starts one or two kicks. Idles perfectly normal. Warms up and and close the choke like normal also. Twist the throttle though and it bogs down. (I bought it cheap off a buddy like this)

Took carbs apart, very basic carb, every thing seems in order. I cleaned it, put it back on; does the same thing?

Put my hand over two holes on the snorkel of the air box... revs right up!

Eureka! so after asking around locally on why this might be the case, all I got was bunch of shrugged shoulders. I decided to just put gorilla tape over the two holes and ran it all last year.

This year I'm curious to get to the bottom of why this occurs? and to make sure I'm not killing my KLR's engine running it like this?

Otherwise all seems normal?

Any help would be appreciated.

 

What size main jet?