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Why haven't they developed a curved tuff block for this very reason? Like mabey a 1/2 circle with a 5ft or 10ft radius? Or mabey two 90 degree curves that can make up a 180? And, use the 90s on the inside of the other turns too?

Put in the # 50 leak jet, turned in (put in more delay) the screw on the cam. Turned it CW one turn. Used the O-ring mod also. Tried to do all that and take off the O-ring, and didn't help as much as with the O-ring on. So I left the O-ring on. Bike ran good. This is a common problem with the...

17 in the 50+! 7 in the 55+. That's not bad either. I'm gonna run 55+ at High Point's vet nationals this fall. Haven't been there since '88.

I'll look at it here in a bit. No one in central Ohio has any leak jets but Lancaster Sports Cycles. Picking up the only one they have, a 50, in the morning.

Well, here we are in April, and what I've found out is that the bike is suffering from the dreaded "YZ250F bog"! Apparently, this is a common problem for FCR carbureted bikes. The problem is fixing it. I've found a bunch of threads on it. And I do believe it is a lean bog, caused by the...

I agree with Reed, If he's racing for a position and Dungy is moving up and getting ready to lap him, then Dungy should pick a spot and pass, This is pro racing, and he's racing for points and money too, not just a trophy. He's currently in the top 10 in points. He doesn't need to pull over for...

My wife has been telling me that since I met her in '82! lol! Only recently has she been actually changing her way of thinkn', and actually encouraging me. Though come to think of it, I've got good life ins., and worth more dead than alive. I think she wants me to have a stroke or heart attack...

Reed didn't look like he was backin' off on the start. Either was gonna get the holeshot or crash trying, and he did the later. with Dungey to his right, unless he's in front of him, there wasn't too much else he coulda done.

You'll not miss Detroit!

Can you pm the discount to me?

I'm sure this'll get moved or something, but I'm lookin' for a blue, or stock blue/black, or all black seat cover for a 2014 or newer YZ250F/450F cheap. Also have my stock red/black to trade. Mine has about 11 hours of use. Will pull it off and send it to you UPS if trading.

Mabey Road Atlanta?

Bike's running great, but the popping/backfiring is still there. It's the aluminum sleeve on the exhaust. FMF sells them for their exhaust for $20. Ordered a couple.

Well, I put all the jetting back to stock for an 09 YZ250F, went and did the O-ring mod on the accel pump arm, (all you do is put a #78 oring around the arm, and the AP timing screw, behind the screw, so they both turn together) and wa-la, and runs great. Researched this a lot, and there's a lot...

Yes I did check the oring, washer order, twice. I'll check again, got it off the bike. I'll check the squirt. Thanks Jason.

Went down this road once alomg time ago...

From everything I've read and gathered so far, I'm leaning towards the accelerator pump. Putting the jetting back to the way it was, and going in that direction tonight.

Oh, and yes, it does it under load while riding. Get into the upper RPMs though, and not as much as the low to mid range. It actually starts at about 1/4 throttle. Just starts dying, like someone is holding in the kill switch.

Haven't looked at that yet. I'll look at that. Thanks

Well, the bigger pilot didn't really help, so I put the cleaned up original 42 back in. Cleaned up the carb real good. Have the clip up one from original position on needle. Fuel screw out 2 1/2 turns. No more popping or glowing exhaust. Idles good, starts good. Up to 1/3 or so throttle is good...