*HELP!*

[gt244]

Hi
I have a tt250 and when you try to give it full revs it misses and looses power. Down low in the rev range it goes fine tho. Could this be a timming or spark problem? any help would be much appreciated,thanks.

[Postie]

have you checked the basics? airfilter, spark plug and fuel system?

[John]

cleaned/check the main jet?

[gt244]

Yep,Spark good,Air Filter is sweet,Fuel is sweet.And have given carb a good clean.
It only misses and backfires when it is high in the revs. :argh:

[Postie]

Yep,Spark good,Air Filter is sweet,Fuel is sweet.And have given carb a good clean.
It only misses and backfires when it is high in the revs. :argh:
its a 2 smoker right?
it could be a number of things, but obviously not those. looks like you might have to bite the bullet and take it to a bike mech, might just be in need of some good ol' TLC.

[Ixion]

its a 2 smoker right?
it could be a number of things, but obviously not those. looks like you might have to bite the bullet and take it to a bike mech, might just be in need of some good ol' TLC.

Yammy TT250 is a 4 popper I think. DOHC, 4 valve.

[MSTRS]

Yammy TT250 is a 4 popper I think. DOHC, 4 valve.
Sure is. I'm thinking timing/fuel issues.

[mstriumph]

bike i had did that - was the fuel system

[gt244]

Hi,Yea it is a four stroke,I have never timed a bike before how do you do it.
Thanks for your help.