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Mikuni tuning help


KamakSun

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Howdy Ratsunners,

 

I got my closed chamber head back from Monta at machine tech and I’m very pleased! Everything is running well except at take off. There is a hesitation sputter in initial exceleration and then everything is perfect. How do I correct this? Are there any mikuni tuning gurus in Dan Diego?

 

Happy Sunday,

 

Kamaksun

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I'm no Mikuni tuner but i did get mine set up pretty good.If jetting is good check the synchronizing.Also check for a loose jet.I have to tighten one particular jet up every few hundred miles.When it loosens i know it because of a sputter when i accelerate.What motor,jetting etc. ?

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Hi; venturi's too big?   Accelerator pump nozzle plugged. Accelerator diaphragm defective. Check valves not working. Accelerator pump is adjustable for bigger or longer "shot". Mikuni PHH carburetor service manual. "calling" from Canada

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