WR426 Jetting for Colorado 5k to 13k
Posted May 14, 2001 - 10:17 AM
I ride from 4k (Moab) to 5k(Denver) to 7k(Rampart Range) to 12k(Crested Butte).
Have dropped to a 150 main, but think that's too lean. Dealer left in a 160, which foulded like crazy. Read from others that a 150 works for them. Also read others are changing PJ's with better success than leaning out the main. Dealers don't have much to offer around here...
I have a 2001 WR426 w/ YZ timing and silencer core removed. A buddy has a stock WR426, so any additional advice would be appreciated.
Posted May 14, 2001 - 04:47 PM
Posted May 14, 2001 - 09:02 PM
Changing the main jet is not going to cure plug fouling problems.
The carb needle in the YZ426 uses more taper and will need a smaller main jet by about 2-3 steps from the WR OBD-- carb needle.
Posted May 15, 2001 - 07:36 AM
[This message has been edited by mikeolichney (edited 05-15-2001).]