Posted June 03, 2012 - 04:53 PM
Hi guys i have a 04 wr450 im having trouble with it will not idle and seems to be running lean low to mid. here is what i have done so far. valves adjusted per service manual , gray wire mod, snorkel removed, stock exhuast w/ pmb insert, new main 160 and new pilot 48, bike was sitting for about a year. completely cleaned carb twice, new fuel. bike has low hours. I have tried 150- 170 main and 42,45 & 48 pilots with air screw from 1.5 - 3 turns with no luck. I adjusted idle screw all the way in but seems to only have effect when choke is on. I own a 03 wr450 that i modded myself that runs excellent. I told a friend i could help him with his 04 but i am about ready to start switching parts to see if i can get his going. Im at about 5000 ft elevation. I used the jetting that worked well on mine with this same setup hoping it would be close but i cant get it to idle.