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06 yz450f fuel screw and pilot help

2 posts in this topic

Ok so I was running a 48 pilot and I got really bad popping and the fuel screw had little effect. It was 4 turns out but it ran pretty good. So today I picked up a 50 and a 52 and tried both of them. They act the same way as the 48. Hanging idle, fastest idle is around 4-41/2 but with the 52 the idle screw has. I effect when turned out that far. Still pops with the new jets. Can't figure it out.

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