bike bogging out

[Moto99]

hey guys, ive had a few problems with my JK carby it use to go great untill me and a mate crashed and its been bogging out ever since, when ever i pull the thottle quickly it bogs out and wants to stall
The main jet is 90 if that helps
ive cleaned out carb out, new thottle cable
I couldnt find any threads either cheers for your help!

 

[Moto99]

any help guys? wanna go riding tomorrow..

 

[paton]

When was the last time you did your valve clearances???

Not sure why a crash would have caused this. I would do your valve clearances throw in some fresh fuel then go from there.

Does it only do this when you quickly pull the throttle on?
Tried a fresh spark plug?

 

[dadof2]

did you crack the manifold or the carb slightly and are now sucking air just a guess but it will give you somthing to check atleast

 

[Moto99]

yeah it only does this when i pull the thottle quick, ive checked the carb manf and its all good

 

[sean01]

has there been a weather change in your location? this can have a lot to do with engines bogging or flat spotting

 

[Moto99]

nah dude its been the same

 

[sam93]

Check your gaskets if your gaskets arent 100% can do this, when he stacked it did any mud get in the carb? also check float level.

 

[Moto99]

im not 100% sure if dirt did go inside the carby, but i did clean it out today and gaskets are new

 

[Cactus Jack]

Check and redo the valve clearances as Paton has said ...

 

[sean01]

^^^^yep and make sure the exhaust is sealing good in the head..

also double check your inlet manifold (i know you said you have already) hair line fractures are common..
specially in the smaller e-start engines where the manifold is taller than usual. (like in a china quad)

 

[dadof2]

yep same thing happend to ours missus flipped it at an allmighty speed and put a hairline crack in the manifold giving the same symptons as what was posted