Im just askin if its normal or not when I gun the throttle i get a brief hesitation ( like a cough ) then it goes. Almost like its gonna stall for a sec then the fuel starts flowing? Shouldnt it just go the sec I turn the throttle?Any help would be greatly app.

Ted

 

first thing, make sure your choke is off. Yes, sounds like a stupid mistake, but i did it


secondly, my hundo does this when it's cold, just give it a few minutes to warm up and that might just be it.

 

nope not choke. maybe just cold.

 

my stock 50 took like half second to respond, makes it kind of hard to time throttle and bounce.I added a 72 kit and now the response is like my f4i

 

Your jetting is off. Take the time to dial it in and you will be very happy and probably end up stunting better.

 

read a carb guide.

You can adjust your needle in your carb easliy... also the mainjets are cheap and easy.

Id 1st try adjusting the air screw on your carb and see what that does for you... I think factory is out 1/2 turn....

 

Shugga you cant adjust the needle in the 06 crf's there are no notches..

 

you need a 05 needle bro. that hesitation is a lean spot, that's why some carbs have accelorator pumps ( to add extra fuel on sudden throtle openings) it's almost impossable to get completely gone and not have it be a bit too rich. there's a comprimise in everything in life.

and i'm not saying it can't be dialed out, there's always that "one bike that doesn't do it" or a fuel injection set up

 

Wow.. I never have worked on an 06 so I had no idea. I have a 84, 02, 03, 04, and a 02 70... I used to have an 01 as well. I didnt realize they changed the 06 carb.
I have been told...

 

Wow, I learn something new everyday. Hummmm