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Found 179 results

  1. I got a new to me 2001 yz 250 which has a healthy motor and jetted properly for my elevation. The problem I'm having is when I'm in gear riding and push in the clutch the rpms don't drop to idle but if I give it gas it doesn't slip and revs freely. I can start the bike in gear fine and looked at my clutch already which has plenty of life left and my clutch basket is in good condition to. I adjusted my clutch freeplay which was already in spec. It has aftermarket clutch lever and I maxed it out as far as it can go outwards but the rpms still wont drop to idle when im trying to coast in gear. Another weird thing is if I'm stopped in gear with clutch pulled in it is at idle speed. Any suggestions is appreciated because I don't know what else to check.
  2. I have a 2006 yz250. It was fully rebuilt top to bottom last winter before racing started rode all year and it was fine the problem I am having after winter start up is starts no problem, run decent, when I turn the throttle smoke and. Lack oil spray out of the silencer like if I put a glove on there's a nice layer of oil also the part of the carb that comes out of the tps and sits on the throttle slide. To me seems loose as in I can lift it to a point and it doesn't spring back. Is it suppose to stay tight to the top of the slide it feels like it doesn't any force down till about 3/4 throttle when I hold it up with my finger also when I lean my bike over the idle picks up a lot
  3. How can i fix this? Why is this happening when everything else if fine? Took it to a machine shop guy said 100 in labor to do sleeve and he said he didnt know if they made sleeves but they do. Im considering on buying a brandnew cylinder but lots of money didnt know if cylinder could be fixed or this will happen again. Heres the piston, then top of jug has chips taken out 30-50 thousandths
  4. i live near nc want to ride with some people gotta yz250
  5. Hey I was just wondering if anyone could help me with jetting specs and proper premix ratio. I have a 2004 yz250 2 stroke with v force reeds, and a pro circuit fatty pipe. Mostly trail ride and hill climb with some track activity. Was wondering if anyone e could shed some light because it seems like I'm running super rich. Any help is appreciated, thanks!
  6. so i have a 1990 yz80 and it wont kick start when it is cold so i have to bump start it but when it is warm it kick starts first or second kick. It will bump start the first push but no kick starting. CAN YOU HELP ME!
  7. I went out riding for the day and on the way back home i fouled my plug so i walked it the rest of the way and i took a wire brush and cleaned my plug and it started first kick. I noticed it was a bit rich on the pilot so i adjusted the fuel/air screw and got it running really good but then i saw coolant steaming out of the radiator cap so i quickly turned it off and later in the week i diagnosed it as a blown head gasket so i ordered it and replaced it and didn't start but it backfires out the exhaust when i kick it. I even tried bump starting it towed behind a quad and still nothing but i heard it fire every so often but didn't start so then i started tearing the bike down cleaned the carb really good got all the jets, replaced the pilot air screw since it was missing parts, got a new spark plug cap since it was rusty inside and the plug was loose in there, took apart and cleaned the power valves, cleaned the spooge out of the expansion chamber and silencer but still wouldn't start so now i don't know what to do i think it might be a timing problem since its backfiring but i really need some more opinions before i start f-ing with it.
  8. Should I buy a 2002 YZ426f OR a 2009 CRF250R? The YZ has alot of extras and looks to be in pretty good shape, the owner used it alot, but took care of it. The CRF is in EXCELLENT condition and looks great Both bikes are for sale at about $1500, but i should be able to talk it down a bit I'm having a difficult time deciding between the two, I'd be sacrificing power for age and vice versa, idk any insight would be helpful. Thanks
  9. My bike has been running noticibly hot latley, then I noticed my coolant was low. This is the first time I've had to change coolant on my Yz450f and I'm not sure what I should go with. I have some Preston 50/50 lying around, but I'm not sure how safe that is for my bike. I've heard good things about engine ice and water wetter, but I want something that is available locally. Also, I live in south Florida where it is always hot, so I don't need a coolant that goes very low below freezing. Thanks for the help.
  10. Does this cam look damaged? I bought a used one online but can't tell if it's good or bad. The right side doesn't feel perfectly smooth but yet it doesn't feel scratched either.
  11. im am 13, 100 pounds (with gear) and currently ride a 08 yz85 and am looking to move up. first off im not rich and i have to pay for my own stuff, i am not going to be racing i mainly just ride track and trails here and there also some desert sinlge track. i am debating on witch i should get next a yz125 or a yz250f. i can handle the power i have riddden both a 125 2 stroke and a 250f and i basically fell in love with both so i am in a predicament on what whould be best. anything helps
  12. I just got back from a weekend of riding and noticed my fork seal leak got really bad and is dripping oil. I am going to replace it but for now is it bad to ride on bad fork seals? For when i replace them how much can i expect to spend on supplies if I do it myself, and how much will a shop charge me
  13. Hi, I just found a great deal for an 06 yz 250 online, and was just wondering, if I'm about 5'10, how would I fit the bike?? I was wondering if I could get two feet on the ground, control it well and stuff like that. Thanks for reading!!
  14. Having problems with Yamaha yz 125. Have an aftermarket keihin pj carb and bike cuts out and high rpms and fouls plugs easy. Replaced the main hex jet by a lot of sizes down and still does the same thing. Bike will start (not easy) and bog out and die after 5 mins of riding and won't start up unless you kick it over at least 30 times. Any idea what the problem could be? Thanks guys.
  15. Any idea what bike I should get I want something fast I'm 5'8 125 pounds and 13 years old
  16. Hi, brand new to this forum so excuse me if this is in the wrong section! We got a 2002/03 (unsure), yz85 a couple of months ago. Very few issues at the start, ran perfect. In the past two months the bike has been very temperamental. It was idling very high when it started but alot of the time it wouldnt even start. Was making very throaty, burpy kind of noises, especially with a bit of a throttle twise to try and get it going. So, after pulling the carb to bits, cleaning all of the jets, itd run once well, then do the same thing again. We repeated this process 4/5 times to date. We eventually routed the cause to a frayed intake boot causing a vacuum leak. So we replaced it. Good as new. For the first run.. kicked like a horse the first time we ran it after replacing the boot. Then today, she's back to her old self. Started fine earlier, and then just went throaty and started to die. Sounded like the plug wasn't firing. So took it out, checked. Nothing, check if there was power to the coil pack, got a spark, so cleaned the plug with a wire brush (b10eg, btw) Away she goes again, for 2 minutes, and dies. Back to making throaty sounds again. The plug is working as of now. The bike would start if the throttle was wide open but be very very throaty, burpy and rough. Carb was cleaned earlier before this. (Today) That's all the detail I can give, any questions feel free to ask me. I've given up on it as I'm all out of ideas. There was a bit of black oily stuff leaking out of the exhaust as well, only noticed as I was finishing up. Any help, ideas, suggestions are welcomed. I have a video of it but can't upload here. Thanks in advance
  17. I have a 2003 yz125, it’s excessively dripping oil out of the silencer and where it meets the exhaust, there’s a lot of oil, it’s throwing out huge amounts of smoke and starting to foul out plugs. I’ve already replaced the clutch side seal (I’m almost positive it’s coming from the transmission oil) and repacked the exhaust. After that it seemed to stop or at least slowed down. After sitting for a couple months I changed the transmission oil once again and started it up, I let it warm up and didn’t feel like it had the normal amount of power and kinda bogged down, we revved the hell out of it and it cleared up and felt normal. We loaded up and drove out the the desert and I started it with the choke on and let it idle, after about a minute it died and wouldn’t turn over at all. We came back home and took out the spark plug and it was fouled replaced it and it ran again. The next day the same thing happened. Any thoughts on what I should do? The engine was recently rebuilt and I only use it for trail riding and run about a 40:1 ratio. Thanks
  18. Please help! I recently bought a Yz250f and have not been able to start it, it Has spark, but there are many issues with the carby which I wanna rule out before I leap into a rebuild, ( I want to avoid a rebuild if possible as I’m low on cash). The carby at the moment is a complete mess so the usual steps to fixing it might not work. So here’s the deal with the carb: - It’s leaking fuel from overflow ( really fast! ) and when I mean really fast, I mean it emptied my fuel tank in 2 mins. - It has a slow leak coming from somewhere under the float bowl - the air fuel screw is not adjusted correctly - I don’t know if the electrics work on it either - I don’t even know if it’s shooting fuel into the cylinder or not, as after kicking it a couple times and it’s not starting I remove the spark plug and it’s still dry. ( I tried putting fuel directly into cylinder from the spark plug hole but the bike still wouldn’t start) okay so I know it’s a lot but I’m not expecting anyone to answer every single question themselves. If each person could tackle whatever problem they know it would help heaps. Also just want to know what Order to fix things in as I can’t do air fuel until the bike is running and it won’t run unless I stop the leaking and get it to spray fuel into the cylinder. And buying a new carby is not an option ( I’ve got $40 to my name atm). Please help guys thanks.
  19. Can anyone tell me how much my 2008 YZ250 if worth. Bike is in good running condition with nothing missing. Good tires etc. Has some wear as any 2008 would but is still a good bike. I dont see many of these years available on the market. This is the only half-way good pic i have at the moment.
  20. In august I had bought a 1995 YZ 125 for exactly $480. Two days prior I had sold my '05 TTR-125E for $780. the YZ had a blown top end and he had told me it was because he ran a spark plug that was too long and that was the reason for seizure. I tore it apart and half of the piston was completely melted, the rings were melted into the piston head however there was no obvious damage done to the topside of the piston.... liar. I tore the bike as soon as I got it, starting with gas tank, then radiators, then cylinder head - when I pulled it the cylinder was smooth and piston still moved freely within the cylinder. did some measuring and inspecting and decided to buy a wiseco piston kit with the piston - 54.50mm + new rings and Athena gaskets + exhaust header springs. I also bought a 600 grit sandstone hone and stuck it in a wireless drill and went to town on the cyilnder, I'm not sure why people always send out their top ends to get honed. it was so easy. While waiting for slowco to send me their kit I began removing all of the god awful ugly plastics, and began restoring them with a hard surface stripping gel I picked up at walmart. also the plug that was in the bike when I got it was the NGK B9EG, which is what I run right now, double liar.. I don't know what else to say, im bad at thumper talk. enjoy the pics. comments welcome
  21. Hi I’m 15 and I’m from Ireland. I can’t decide what bike to buy. I have no experience on dirt bikes(only small road bikes). I have been riding quads with about 10 years and I’m looking for a change. I can’t decide what to get a yz 125 or 85 since I’m only 5 4 and 55 kg. I have a lot of experience on quads so I’m not afraid of speed and power but I really don’t know much about bikes. Any advice would be appreciated .
  22. Well guys, I officially pulled the trigger!!!! I have been looking for a bike non stop on craigslist for about a year now....I just CANT justify spending 7k on a brand new machine. About 3 months ago I bought a project bike for 500 bucks and realized it was gonna cost way more to fix it than the bake was worth...it was a 2001 Yz125.....so I resold it, didn't lose any money on it, and kept looking....Well last week, I FOUND A GEM THAT I JUST COULDN'T PASS UP!!!!Went and picked this puppy up today for 3,500.00 bucks. 2015 Yz125. Dad bought it for his kid 2 years ago, who rode it for 6 months around his neighborhood, broke his wrist, and then never touched it again. Has about 40-50 hours on it I was told. What do you guys think??????
  23. Hey, I have a question. But first let me tell you that I am new to dirt biking, so I don't know anything. I purchased a 2001 YZ 125 in October and the seller said that he just changed the Piston and Clutch. I took it out in Gorman (OHV Riding Area) and like I said I am new, so I kept stalling the bike because I was learning and just let go of the clutch. But then when my dad got on, he said it is my fault for just letting go of the clutch lever, but also the clutch plates are a little bad. I can start the bike, let the clutch out 90%, and ride. Like shouldn't it start to move when I am half way of letting go of the clutch lever? I've seen videos of people holding their clutch lever half way and are moving 10-15mph. I can ride it perfectly fine now... But just wondering, what's wrong with it?
  24. Hey Guys - Yesterday while washing her I noticed the reservoir window on the front master cylinder has a bunch of little spider cracks on it. Does anyone know if this is just a plastic cover over a thicker plastic piece or is this the only barrier between the fluid and the outside world? if this is the only barrier it is reasonable to believe its letting small amounts of Air into the reservoir? Also anyone out their have any suggestions for aftermarket caliper and master cylinder?? Figure if the cracks are letting small amounts of AIR in the master then i need to replace it so id rather just upgrade.. I have been trying to up the stopping power of my front brake on my YZ and i'm still not happy with it. I really want rock solid throw you over the bars power with an easy pull but cant seem to find it. I have already upgraded to a oversize rotor, Galfer stainless line w/ CR style conversion, New EBC Pads and fresh fluid from Motul Right now for steep drops or ravines i'm literally having to squeeze the lever as hard as i can to get it to hold tight Any advice is appreciated
  25. Hey guys, so recently I've noticed that my front pro circuit suspension is stiffer than hell. So I read on it and it said that sometimes it's because the front wheel is misaligned and the forks will not sit right. So I put the bike on a stand bled the suspension and got the axle nut loose and the pinch bolts, and every body said to push the suspension down or even press the brakes a few times to help align the wheel. I made sure to tighten the axle then tightened the pinch bolts. But when I tried to push the suspension down while everything was loose it barely moves at all because it's so stiff. I even tried putting the bike on the stand and turning the clickers counter clockwise to soften them up but they were out of adjustment. What do I Do? How do you guys realign the wheel? I've got a riding trip coming up soon and need as much help as I can get. I'll try to add a link to video I found of a bike doing the same thing.
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