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yfz450 blog?
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Posted by: lost boyz

I Have a 04 450 and if the bike is idleing or low throttled it will bog and die if you punch the throttle. What Can I Check to try and get this to stop?

i see everyone talking about leak jets?
what size leak jet did you install to make this stop?

and also what are your main jet and pilot jet numbers?

its a stock motor with air filter and hmf full exhaust...

thanks for anyyyyyyyyy help!!!!

Posted by: Mc. Muffin

Check and see if you have air getting thru on your exhaust where the header and the silencer connects to each other...
I had the same problem on my old warrior and that was the problem...