1. Jackel90zwithissues

    Help

    So I’ve got a jackel 90z (86cc) it will start and run, but if it DOES idle for long it acts like it’s gonna run away, it goes straight to high rpm, and doesn’t come down, can anyone tell me why, I have no air filter atm, also looking for proper carb adjustments. Tia -jackel90zwithissues
  2. Tjb4199

    1979 Yamaha Mx 100 forks

    Just spent five hours trying to take apart the forks on my bike. The fork unscrews at the top but you only get a bolt and nothing comes out the top. Same at the opposite side of it. Doesn’t seem to want to twist off down around where the rod goes into the compression tube. I am absolutely...
  3. Tjb4199

    79 Yamaha Mx starts with idle way too high.

    Got the bike and it ran fine. Changed the back tire out, then finished. I accidentally moved the throttle chord to where it was stuck at half throttle and started the bike. I managed to get ahold of it and turn it off, and fixed my cable problem so I am at almost closed throttle. But the bike...
  4. G

    1991 KDX 250 Severe Engine Problems

    Buddy of mine has a 1991 KDX 250 that used to run great. Now its having some big issues. It will not start with the kick starter even when warmed up and must be bump started. When it is running it kicks in and out of power as if it was still extremely cold and needed to be warmed up (basically...
  5. Logan33

    Help Oil Leak Issue - KX250F

    So I have a 2005 Kawasaki KX 250F. Its got 30 hours on the top. Previous owner did the top end build. Bike has been running greats so far. Took her through some mud and water. Still ran for about 30mins. Stalled out on an unexpected turn. (my own fault there with the clutch, I'm a newer rider)...
  6. B

    Help Kickstart took forever

    I bought my 2004 crf250r this summer and had no issues with it. So I recently went out on a ride for the first time in a awhile. Now that it’s colder out we wanted to explore. When I started the bike it took a long time to start, like, over 30 kicks. I had choke on and wasn’t trying to flood it...
  7. E

    2004 yz125 oil change

    Does anyone know how much fork oil I should put in my 2004 yamaha yz125? - I am a 130 pound rider.
  8. M

    1999 rm125 help

    I just did I top end rebuild on my bike I had 60 psi before the rebuild and 180 after I couldn’t get the bike to start for a few days and finally I got it started with a little starting fluid and I saw it was blowing out radiator fluid out of the discharge/overflow of my radiator but I kept it...
  9. C

    Help! won’t start after rebuild

    I have a 1982 yamaha It175 that i’ve never seen run. I recently replaced the top end on it. It has spark, compression, fuel, and air. I cant think of anything else to check on it. I’ve sprayed gas directly into the cylinder and it shows no signs of life. However; sometimes when I’m trying to...
  10. C

    Help! Yamaha won’t start

    I have a 1982 yamaha It175 that i’ve never seen run. I recently replaced the top end on it. It has spark, compression, fuel, and air. I cant think of anything else to check on it. I’ve sprayed gas directly into the cylinder and it shows no signs of life. However; sometimes when I’m trying to...
  11. zackbrappp44

    2001 kx125 bogging on bottom end and surging on top

    I have a 2001 kx125 this is running what pro Circuit recommend for jetting (I have a platinum pipe), but the bike seems to run rich in the low rpms and then up top it seems to have sudden surges once in a wile when I do a pull. I don’t want to ride the bike if it is going to damage the motor...
  12. vivingmx

    Help - Need Ideas - Crankshaft Bolt is Stuck! (2002 YZ125 Rebuild Project)

    Hi there, Purchased a project end of Oct. 2018... I am rebuilding a 2002 YZ125 basically from scratch. The whole bike is torn apart at this point, parts set aside for cleaning and repair, engine cases split, and am now finally at the source of the problem.... The transmission bearings are...
  13. J

    Bike won’t start!!

    I have a 2005 RMZ 450 and it will not kickstart! The only way it starts is if I bump start it and even then it won’t idle with the choke on... someone help!!??
  14. N

    Help 04 Cr85 main jet problem!

    So in April I bought an 04cr85, for a while the thing ran perfectly, over time it started to lose top end power, a bit from the piston wearing down, and a bit of a sputter from running too rich. I'll start off by saying bottom end rpms run fine since I got the bike till now. But I recently...
  15. D

    Xr100R rear tire fit???

    I bought a paddle tire for my xr and its coming in tomorrow kind of to late but will a 90-100-16 fit ? ive been looking everywhere but no answers
  16. N

    2001 KTM 400 exc issues

    Hey i bought a used 2001 ktm 400 exc a few weeks back. The bike ran well but leaked a little gas upon starting. No issues until the last time i rode it for a solid 2 hours the bike died out on me. Now the kickstarter is completely stuck in place at the top, and the clutch has no pressure to it...
  17. Tadjohnston

    Help 2001 Rm125 need assistance

    Riding on the road on the long weekend, sounded like the top end went. When you go to kick it over the kick start was hard as hell but still moved. Would not run though. Took off the head, on certain strokes of the kick starter you can push the piston down, on some not. Kick start still very...
  18. T

    Coolant Problem.

    Ok I have a 2007 yz250f and every time I ride it for a while I'll come back and coolant will drip out of the overflow. Every other forum really hasn't helped me with this so i'm hoping this one will. The bike runs fine and isn't overheating it just keeps dripping coolant out of the overflow...
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