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Flooky

Gas Gas txt 250 2018 racing, bogs on slow throttle ???

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Hi, my son just bought the above bike, we went to practice today and it was fine , when he went to get over something bigger it bogged, badly..I had a go and when I wound the throttle wide it bogged like the brakes were on.

We went back to the van for a head scratch and fitted the quick action from my sherco ( white tube, one that came off was black ).

fixed !!!  now I am glad it is but I cant for the life of me see why.

We tried everything to make it bog again and it wouldn't.. any ideas ? cheers

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My guess would be that a bit of dirt was blocking the main jet and it no longer is. Can't see the throttle being relevant.

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I know, I thought that, but it was as clear cut as slow throttle...bog...quick no bog. I gonna swop back to see...the bikes haunted !!

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8 hours ago, Flooky said:

I know, I thought that, but it was as clear cut as slow throttle...bog...quick no bog. I gonna swop back to see...the bikes haunted !!

if you are trying to eliminate the throttle just remove cable and pull that.

Regardless if you are encountering a carb problem best to strip carb and clean just to be sure.

Kehein?

if possible ride with a fast tube.

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2 hours ago, nigel dabster said:

if you are trying to eliminate the throttle just remove cable and pull that.

Regardless if you are encountering a carb problem best to strip carb and clean just to be sure.

Kehein?

if possible ride with a fast tube.

Yeah , we were rushing a bit , I will look into carb/jets etc. Having just got the bike we wanted to see how it went etc. We bought it from a friend so I will ask if he had any issues. cheers all.

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3 hours ago, nigel dabster said:

Don't mess with jets, yet.

Basics first.

Is it a kehin?

Yeah its a Kehin, no I will just clean it up and see what jetting is in it.

cheers

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Great carb,more susceptible to dirt or incorrect tuning than a dellorto but better when right,much more precise and smooth.Need to keep the air filter clean too

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