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  1. Have a 2003 rm 125 on the first ride it seized bad crank bearing changed the crank and bearing and gaskets first ride after being fixed there started to be a weird grinding sound coming from bottom end almost sounds like clutch side bike starts and runs fine im not starting it though to minimize damage
  2. Hey guys does anyone know why when I put my front tire on and compressed the forks they got stuck so I went to take the tire back off and when I started taking the axle out the forks popped back up!! Anyone know why this happened?? What am I doing wrong?? And fyi it is a 2005 crf250r
  3. I have a 2003 ktm 250 sx that was fouling plugs but I've re jetted it and now its running good, I was just curious if there is a cheaper plug I can run in it. Right now I'm using the BR8ECM 3035 and its 25$ a plug is there a spark plug out there that is cheaper but will run okay in my bike? Thanks anything will help!
  4. My dad has a 2002 or a 2005 Kawasaki 650 that sputters when you give it gas. (Sorry can't remember the year) Sometimes it will run fine (only for a few minutes) and sometimes right away once you start it and give it gas it'll lag and sputter when you roll the throttle. It starts right up but for some reason this problem keeps happening and it's preventing me and my dad from riding. He's nearly 60 years old and I want to help him fix it so we can get some more rides in together. He's been messing around with the gas line and one of the air tubes from he carb. He was showing me that the main gas line had a bubble in it so it wasn't getting gas but I'm thinking it might be something with the carb. What do you guys think? Any ideas would be a huge help for us so we can get back to riding.
  5. I have a 2009 Yz250f. Bike runs and rides great, throttle response is snappy. Only problem I've had with it since I got it is the noticeable idle hang it does sometimes. when I let it idle, the RPM stays fine, but when I give it some gas the idle hangs for a few seconds then dies back down. Sometimes it does that, sometimes it doesn't. It is also noticeable when riding because sometimes power continues to be at the back wheel after releasing the gas. Again, only lasts a few seconds before the power goes back to normal idle speeds. Checked for air leaks, sprayed starter fluid around carb clamp areas, no idle jumping so my guess is that it is not an air leak. Checked throttle cables as well, it seems that they return to their normal position after releasing the throttle, but I could be missing something. played around with the fuel screw and idle screw, the fuel screw can be turned in almost all the way before the bike stalls. my biggest guess would be that it is either the Throttle cables or screw adjustments. Any opinions on what it could be?
  6. I have a 2001 rm125 Is my power valve activation rod supposed to have any play in it? I can move it about .5 cm until it’s tight against the power valve spring and actually moves the power valves. It looks like maybe I can just tighten the bolt shown that is on top of the spring.
  7. Looking for a 125 2 stroke to ride on my 2 acre property and trails. (I'm aware this isn't the ideal bike for my use case but it's all I can afford. Trail bikes are WAY more $$ in my area. Also my property is actually set up quite nicely for this purpose regardless of how small that sounds for rideing) Basically I won't have enough space for top end power, so I need low end. Here are my specific questions: 1) which is most reliable in your opinion and why? 2) which has the most low end power/acceleration? 3) if different, which can safely go longest without a top end rebuild? 4) which handles slow speeds the best? 5) for those who've ridden multiple, which do you recommend for my use case? Keep in mind that these questions are relating only to mid 90s through mid 2000s 125s. Also ktms are usually about a 3rd more expensive here, but key me know their benifits none the less. I would just look for a 4 stroke trail bike, but again, in my area, they're too expensive for me. Basically the only full size, fairly modern dirt bike I can afford is a 125 2t, so please don't just tell me to buy a crf250; I can't. Thanks!
  8. So we pull started it behind a car and it started but the throttle was UNcontrollable. The clutch was pulled in and the idol would keep raising by it's own and we would have to kill switch it to stop it. by the way we were not giving it gas it did it by itself Side question, should there be a leak tube on the side or bottom of the carburetor, should they both be capped off, or connected to eachother? I'll post a picture for reference. (It looks weird but I pointed at them)
  9. So my little 125 Chinese Lifan motor pitbike recently started bogging for seemingly no reason when I give it full throttle. After playing with the carb I took it off and put it on another 125 and it worked fine, same with my spark plug, so I'm guessing that's not the issue. I then took the air filter off and the bogging problem went away. The bike was running pretty good, although a little rich with some backfire, but it never bogged until just recently. Hasn't been trashed, only ridden on a few pretty easy dirt tracks. Any thoughts on what it could be? I've yet to check my valves properly as I don't have small enough feeler gauges on me at the moment, but will get around to that soon.
  10. So I installed my v force reeds on my dirt bike and I went on a ride around the neighborhood, and when you give it alot of throttle it bogs.I messed with the air screw for 30 minutes and everything I do to the screw nothing changes. What should I do? Oh yeah I have a 1999 cr125
  11. I have a 2009 klx 110 with a totaled engine and I'm wondering what type of engine I could replace it with. I've searched but only found engines for Honda crf 50's and cant find any that would hook up to a klx 110 frame. And before you say fix the current motor, the transmission is garbage, engine blew up so it also needs a top end rebuild, and both the engine cases have been broken with pieces missing. This happened because the slot where the Kickstarter shaft went into the case broke inside the engine and someone continued to run it while a chunk of the engine case was bouncing around inside. Also I'm wondering if they sell a kit where I could mount brackets on the frame to put a motor made for the Honda engines.
  12. My 2002 crf450r exhaust gets crazy hot off start it wasn’t like that when I got it and the head has like a mix of oil and gas in it not sure if that’s normal and I ordered new valves for it because I tested my intake and they where leaky so I just ordered a new kit for all of them anything helps at this point thanks.
  13. Do you think it's possible to register my ttr125 as a moped or motorcycle in California, and what would I need to do it, i live in a small town wanna be able to ride it down to town without a ticket
  14. 2018 purchased with 40-53 hours on the stock motor, pistons, vavles, shims, transmission, everything; besides an aftermarket yoshimura slip on exhaust. Checked the vavle clearance before I road it and they were all in spec with suzuki's service manual. Let's move on. The bike was primary used for I dont know what. The last owner said he did some riding in the Oregon sand dunes. No idea if it was raced before that. My goal was to turn it into a road legal dual sport. I opted for a 2012 RMZ because they come with a dignostic port behind the front number plate mounted on the ECU that when kicked over provides a constant voltage of 13.50V to 14.50V ish. To power all the road legal stuff. Upon completion I replaced the hour meter with a Trail Tech Endurance 2 at 0 miles and 0 hours. Other then a stainless steel oil filter, changed spark plug, and cleaned air filter the engine remained stock. I commuted with the bike to work daily which is 3 miles there and 3 back on 40 mph roads. During lunch i ride for one hour about 15-20 miles on some wood trails. Blah blah blah. Fast forward some more and the bike has 90 accumalated hours total. I have not check the vavle clearance since getting the bike. Most of the riding was around 45-55 mph average for top speed to 35 everywhere else. My oil changes have been every 10 hours give or take how hard and how many miles I've driven. Changed with full synthetic maxima pro plus 10w40 oil. Air filter was cleaned once in between, from the time I got the bike till 90 hours........ lay it on me but wait till you finish this read. Okay so up to this time I'll reiterate that the engine is still stock. No top end rebuilts, no vavle shims, NOTHING! All OEM. At 90 hours I changed the gearing from the stock 13/49 to 15/49 since then I've added 15 hours on it with the same riding habits as before with my longest highway/freeway trip being 30 minutes at 18 miles mostly highway miles driven at or around 65Mph. Yeah she was screaming at that too, with a 5 speed gear box. It was sketchy even with that changed gearing. Blah blah again. Now I'm at 110 hours and 1500 miles on a still stock motor besides transmission gearing. My vavle spacing hasn't changed. And I decided to tear down the top end to see what I'm working with. Cylinder, piston, rings, conrod, vavles, spark plug, head, etc look okay with normal wear and tear. So in conclusion. I will order a forged piston to deal better with the higher rpms that I run at. BUT THAT AS FAR AS ENGINE MODS WILL BE IT. I haven't notice any power losses and love that gearing. It still works well down low. Now take it or leave it but this is an honest tracker from my level of riding and mechanicle knowledge. I'm not getting paid for this or influenced by a company or brand. I'm just posting this because there is, in my opinion no real knowledge posted about this topic but a lot of people are curious. Thanks.
  15. I have a 2004 Rm-Z250. I bought it off a guy for $700 because he didn't want to deal with it anymore. He put a new crank and piston in and still couldn't get it going. I brought it home and did a compression check and it read 60. which is low, I know. So I took it apart and looked and the cylinder and it had some pretty good scratches in it. I honed it for about 15 Seconds and threw it back together and kicked the hell out of it and nothing. I pulled the spark plug out to check the compression and the plug was saturated in oil. I was getting blow by. so I bought a new cylinder and just threw it on and that fixed the blow by. So then I tried to start it and it was giving me a really hard time and wouldn't start so I checked the plug to see if it was shot. It had a decent amount of carbon build up so I threw a new one in. It was wanted to start when I did that. I started to feather the throttle a little to try to help it and it fired up. not every time but about once every 10-20 kicks. So after going through the entire bottom end and top end, the only thing i'm left with is the carb. The bike wont idle and I gave it a little ride and its not running too hot so I believe something is wrong with the carb. I cleaned the jets too. I just took it apart and the O ring on the throttle slide is broken and I am going to throw a new on on but I feel like there is more to it than that. especially with it being so hard to start. There is also a knob on the bottom of the float bowl with numbers on it. Numbered 1-4. I attached an image so you can see what I am talking about. I've looked at the manual and at tons of carbs and have no clue what it is. If anyone could help me out it would be greatly appreciated. Thanks, Alex
  16. My 2007 WR250F has been starting with no problems with the electric start. I just ran the bike Saturday and towed the bike from North Carolina to Colorado Sunday and Monday. Today, I went to start the bike and the electric start was not working. I just charged my battery a couple months ago because the battery died. Could it be the change in temperature? I kick started it and after several kicks it started, but when I press the button for the electric start it just never turns on. The fact that it starts rules out a bad spark plug. This is probably as simple as just needing a new battery but I figured I'd ask just to see what other people had to say.
  17. Headed to Bearwallow this weekend. First trip down there. Staying at the Holiday inn just outside of Logan. Questions- 1.) Anyone with area experience know any must ride trails or sights to see? 2.) MX bikes with stock gas tanks, should we plan on taking extra gas with us? I usually take 2 gatorade bottles of gas. 3.) Going EARLY Saturday, coming home Sunday evening. Should we try to ride Bearwallow and Rock House, or Bearwallow only?
  18. I'm trying to put a bigger motor in my Baja dr70. But I'm not really mechanically inclined I was just wandering the biggest I could fit without having to change anything like mounting brackets etc...
  19. Hey guys I recently bought a 99cr125 long story short it needed a clutch cable and perch. I ordered new clutch cable and a cheap 10$ perch and new boysen clutch basket and plates. The bike runs great it's just super hard to pull the clutch. I lubed it very generously and I have it routed correctly i don't know what it could be I'm not the weakest dude out there but man does it kill my hand and fingers and it's quite annoying. Anybody have some advice? Thanks
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