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Pinking 2012 250


rainey88
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Right just bought a 250 racing 2012 model and its pinking quite abit under load etc and when riding about.

Take it this is from running too lean?

Havnt had the carb off yet which i will be doing friday afternoon.

Just wondered if anyone else has had problems and what to check first.

Thanks.

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Similar experience with new to me 280 Racing. Went from middle needle clip down one, ok in sections but pinky on the going, still needs to go down another slot to the bottom notch. Actually suspect the slide needs to be richer, but at £60 will try make it better with the needle.

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Im new to these carbs and until iv had it in bits tomorrow i dont really know what im looking at, does anyone know of a diagram to explain this a it better.

I thought it may of been down to the jets and just mixture and air screw?

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  • 2 weeks later...
 
 
 

Hi dadof,

Not sure with the plug will have to up date when i go out and check the bike.

Fuel is super unleaded from a total garage.

Brand new fuel mixed the day of riding which has been the weekend.

How do you check your float height and squish clearance?

Filter is cleaned and oiled after each ride or checked to see if it needs doing at least.

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squish and float adjustment have been covered loads of times you should be able to search for them on the forum.

Might be worth taking the exhaust off and looking at the top of the piston to see if its coked up.

TLTEL

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Like I said, go up two sizes on the pilot. If it fixes it, come summer go down one size and see how it is. Funny thing about all the jetting Gurus out there, the pilot jet flows from idle to wide open. If the bike is running, the pilot is flowing.

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