too rich fuel

afunk

Member
Oct 27, 2003
8
0
I bought a 2004 yz 250 and bike runs rich "foul plugs fast", runnning mixture at 32to1..help if any suugestions plz !!!!!!!!!
 

agitt73

~SPONSOR~
May 11, 2000
1,078
0
jetting must be wrong im not sure what the jetting is on those bikes
also check gear oil if its getting low with no leaks it could be a crank
seal
 

Zerotact

~SPONSOR~
Dec 10, 2002
1,001
0
use what ever it says in the manual 32:1 is common.. I'd say you should look into jetting
 

JohnScott

~SPONSOR~
May 22, 2001
96
0
Do a search on jetting - the premix ratio is not your problem. A recent thread adressed jetting issues with this bike - or a 2003 - which shouldn't be far off. Filter what you read though, one of the threads was full of crap.

John
 
Cookies are required to use this site. You must accept them to continue using the site. Learn more…