2007 yz only runs good with choke on

The last time I rode my 2007yz450 i ran it out of gas. After that I had to work and never got a chance to put gas back in it. Finally 4 months later put gas back in it and now it will not run on the lower end unless its choked. Can some one give soem starting things to look at?

The pilot jet has a drop of dried varnish stuck in it. That's my guess.

Thanks, swap the main amd pilot out readjusted everything runs like the yamahammer it is. there was green all over jets. your a life saver.

You know they can be cleaned, you didn't need to replace them! :smirk:


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