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DoctorRzed

yz450f hard starting'carb?

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I put a fmf titanium 4 exhaust on and changed the main jet to a 170. Should I go back to a 165? My elevation is 1400 ft

It will start in one kick when cold if i pull in the hot start?

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Change your sig and avatar and I'll tell you. :thumbsup:

But if it starts on one kick when you pull in the hot start, thats means you are too rich. But wouldn't the main jet just control the upper throttle openings?

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go to the jetting forum there is lots of good info there, and you will figure it out fast.

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