Rev 3 250 Jetting ?

[paul w]

i know there has been a thread on 270 jetting but has anyone modified a 250?

my 05 chokes at the top end of the rev range, it will clear but at the next section its choked again.

it only clears when its really hot.

i have held off doing anything until the tempeature droped to see if it made a difference as it got colder, but i cant say i have noticed much.

im fed up with charging at long hill climbs only to get half way up, the bike chokes up, and back down i come!!

any advice welcome. ta.

[betamike]

Sounds like you may have a bit of water in your carb somewhere. My bike did this once, and this was the problem. Give it all a good clean out with air or carb clean

cheers

[neveready]

ive had three 270s all of which had problems.. now ive got a 250 and i have to say theres no going back, luckily ive had no probs what so ever with the running of the bike however one time after being a bit to enthusiastic with the pressure washer it did run a bit crap..all i did was take off the float bowl nut left the petrol on for a bit,,let i run through ,,put it back together and it ran looovely again..cant see why i used to think 270 was the way to go..its not as though im doing brit champs or world rounds..

[barrybaines]

I beleive a few people use the 27.5 main jet in fact I rode a bike on the weekend with one

[aj201280]

Pilot jet -2 and main jet -1 is what i have been advised to fit it is suposed to make the mix a lot better and stop it labouring on hill climds etc