help me and a buddy

[yb200]

ok so sborns on here just got his bike rebuilt we put my toomey on it and jetting it just like i had mine when i had the toomey 340 main needle in 3rd clip and stock pilot

here is the deal is runs great but sometimes (not all the time) under load and at take off it just bogs and wants to die like its not getting fuel

i know its jetting pretty close but i am stumped on why its doing this he has v force reeds and they seem to be good

its getting good fuel flow

i have had the carb apart many times and everything looks good in there also

i am about to put a set of stock reeds in and see what that does

any ideas

 

[stephen12091985]

up the pilot jet

 

[yb200]

still cant get it tried stock reeds needle from 2nd clip to the bottom 1/4 throttle just bogs and dies under load....at idle it revs fine.....could it be to rich or lean of main

 

[stephen12091985]

idk im still thinkin its the pilot

 

[98blaster+4]

so it revs up in nuetral? but when you put it in gear it bogs out?

 

[yb200]

so it revs up in nuetral? but when you put it in gear it bogs out?

yea is i drag the clutch in first i can get is moving but as soon as i his around 1/4 throttle is just bogs to beat hell like its getting no fuel

 

[98blaster+4]

still have an ebrake ? or the tors? could the filter be clogged up?
played with the air fuel screw yet?

 

[Brute71]

sounds like its lean, bump up the pilot jet or play with the jet needle a bit and see what happens. Could be that the pilot jet is clogged as well.

 

[yb200]

still have an ebrake ? or the tors? could the filter be clogged up?
played with the air fuel screw yet?

no tors no ebrake clean filter..

sh*t i think i have covered it all

 

[yb200]

sounds like its lean, bump up the pilot jet or play with the jet needle a bit and see what happens. Could be that the pilot jet is clogged as well.

tried every clip on the needle

since i can get a pilot any where i might try to bore the one out i have

 

[98blaster+4]

your sure its gettin fuel?
bump up the jets some to richen it out i guess.
what does the plug look like? try a new one for the hell of it.

 

[yb200]

and if i get if moving and pin the throttle itll bog a bit then rap out

 

[98blaster+4]

how was it running befoe the pipe addition?

 

[yb200]

how was it running befoe the pipe addition?

he got it with a bad motor

the getting and setup is the same i had on my bike with the toomey besides a pod filter

i dont get it

 

[fioz600r]

Ever check anything electrical, stator, coil and so on....... Flywheel loose?

 

[98blaster+4]

did yours have a pod filter or does his cause you need a lot more air for a pod filter

 

[yb200]

mine had an open air box

 

[98blaster+4]

open air box? like with no lid? how old is the fuel?

 

[yb200]

no lid new fuel

it does seem like it just cuts out for a while then comes back

 

[YZ Otis]

I'm sure you didn't do this but I did, so I'll toss it in for laughs. I put a wadded up paper towel in the exhaust port so crap wouldn't get in the cylinder while I was workin on stuff. Guess it wuz in far enough I didn't notice it when I put the pipe on. Caused some weird performance issues! It would wander round the expansion chamber and randomly plug things up under load.. Tried 3 carbs, another CDI, timing change, another leak down and figured I'd really screwed up the porting before I figured it out....LOL...No one else would admit this...burp

When common sense doesn't work, it might not be common, or sensible