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Needle Jets Snapping In Half

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This Is My 3rd Needle Jet that has Snapped In Half on my 38mm Kehin pwk carb of a 16 300 xc. I dont know whats going on? And I dont know what can be causing this? Whats You Opinion On What You Think Could Be Happning?

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Needle jet? Check your description of the part. Needle jet and jet needle are 2 different things. I'm guessing you mean the jet needle, the part that you can adjust the clip positions on.

Are they breaking inside the carb?

At what point along its length?

Stock slide?

Do you have problems with sluggish throttle opening, return or sticking throttle?

 

Edited by Trailryder42
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The needle should float.  Does it wiggle in the slide? 

 

 

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Remove the air box so you can see the slide action with the carb installed. Is the needle bottoming out before the slide closes and THEN slides in?

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