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Just got my 1972 Honda XL250 back up and running after a fresh cylinder, piston and rings. I replaced the intake gasket and have a new Chinese 1979 carb all hooked up. Bike usually starts first kick when cold but after I run it a little bit it will either shut down when getting low RPMs when taking off (like I stalled it but it just wants to die), or ill turn it off and go to kick it over 20 seconds later but it wont have it unless its been sitting a couple minutes or so. Choke or no choke, i usually take the plug out and its dry then put it back in and it fires right up. Carb issue? I have another little carb without a return cable but I like using the new one I bought because it has a return cable. I tried turning the carb air/fuel mixture screw a turn or two in both directions and running it like that but no difference, really. I did die on a mountain and took the plug out the other day and it seemed to maybe have a weak looking spark but it was sunny out and I wasnt sure. have at me!

I had a problem with my clutch not working too good. It is still rideable but I cannot start the bike in gear or push it when the clutch is engaged I just changed the springs and plates but still having the problem. I don’t know what to do and don’t want to put a whole brand new clutch in it. thanks in advance

As the title says, my CRF250R have some startingproblems and backfires. Its impossible to kickstart when cold and somewhat possible to kickstart when warm, sometimes.. and it backfires when kicking it warm or cold. The only way to get it started is by pushstarting it and with a little help of breakclean. When started it has all the power it should have and all the compression it should have (atleast what it feels like when enginebreaking). But when enginebreaking it backfires unusually much. Oils looks good and coolant too. I’ve just started disassebling my bike for a thorough inspection for refusbishing, any ideas where i should start looking?

I recently bought a 2007 crf250r and it takes at least 20 kicks to start off cold start just wondering if this could be a problem with the valves pleas let me know

I bought this bike blown up for a decent price several months ago, had the cylinder replated and matched to the size of the new piston. I put a wiesco top end kit in, and I've never been able to get the bike to stop running like it has a tiny air leak. Whenever I open up the throttle then let off completely, the rpm's don't drop straight down to idle, it just take's its time pinging for a couple seconds then goes down to idle. Don't say is the throttle sticking because no, I've put all new throttle components on including the slide and the metering rod(has a Lectron Carb) and made sure it's all clean. The bike also has a Boyesen Rad valve and new reeds, FMF Gnarly Pipe and Turbinecore 2 silencer, and a Steahly Flywheel Weight. In the beginning I thought it was a bad crank seal because I first noticed it would only do it when the cluch was pulled in and I read on here that a bad crank seal can cause that, so I replaced the one on the clutch side first, which looked fine, then when I pulled the flywheel off and saw the seal was almost completely backed out. So I figure there's my issue, replaced it and put it back together, then ride it back and forth my parking lot a couple times and think its good, then get to the track that weekend and notice the same damn problem. I've replaced every gasket and seal I can get to without splitting the cases, but the issue just doesn't go away. The most recent thing I've done was a leak down test and at first it failed by leaking air through the gearbox vent tube, which I fixed by greasing the powevalve shafts with moly grease as you're supposed to, and after that it didn't leak any air after 30 mins of being pressurized, but still didnt fix the issue. So here I am hoping to hear any one else's opinion about it because I am sure stumped. The bike will start first kick every time and have all the power in the world and no other problems but this issue bothers me so much. I've also tried running higher octane fuel because I usually run 93 pump gas and it made no difference. Yes it has a new and clean air filter. Thought it might be a carb issue as well so I tried leaning it little by little and richening it but it just makes it run worse and still have the issue. Please help. In this video you can hear exactly what I mean, theres also a rattling sound you will hear which has currently stopped.

Has anyone bought anything from TX Race before. They're out of Galize it seems and I'm nervous about sending my credit card outside the US. They have a 2021 upgrade kit for my 2007 CRF250R I want to get.