jetting on a xc 450

[agentorange]

if anyone out there can help I'd be gratefull, I bought an xc 450 from the interior, I live on Van. island, and it just dosen't run smooth off the bottom. Actually it runs great with the choke on. I know this means I'm to lean, and the jets are all set at the stock regs. the only thing is that I'm not sure about the needle. Can that make that much of a differance ? thanks for you'r help

 

[ktmken]

imported post

imported post

Yes.....I have a drz400 that would run great at the coast but would run rich here in the interior when I got up in the hills a bit. I dropped the needle (from 4 to 3) one clip and it made a huge difference.
I realize that I have a cv carb and you don't but from what I understand your carb would be more sensitive to elevation than mine would. Try raising the needle one clip and I believe you will notice a difference.

KTMKen