sheas93 Posted March 25, 2010 i rode my 2000 cr 250 for about 2 hours today, and towards the end of the day 4th and 5th gear would just bog and not accelerate hard even though 1-3 hit hard and crisp. it had a slight unnoticable problem in the beginning of the ride, but by the end it was pretty bad. whats up with it? 11oz flywheel, plug, gas? i have no idea. this is my first 2 stroke, and i've only had it for 3 days. Share this post Link to post Share on other sites
FPMXer Posted March 25, 2010 Replace the air filter and change the trans oil. Might as well clean the carb while your at it. Share this post Link to post Share on other sites
sheas93 Posted March 25, 2010 i cleaned the air filter and spark plug (which was wet and fouled) and today it wouldn't crank, it would just start and sputter out for 2 seconds, this is turning me away from 2 strokes. Share this post Link to post Share on other sites
KcDavis My Ride Posted March 25, 2010 No need to get all dramatic about it. Just like any used bike, 4t or 2t, may require some tweaking and work to get things right. Do you have a manual? If not, I would suggest this be the first thing you get. You may need to clean and/or adjust the powervalve. If you are fouling plugs often, you need to adjust your jetting, it sounds really rich. Maybe check for air leaks in and around the air boot. When was the last time the top end was rebuilt? Share this post Link to post Share on other sites
sheas93 Posted March 25, 2010 it was rebuilt about 25 hours ago, it came with a sevice manual but no owners manual. i just thought it was weird because it ran perfect for about 2 hours of riding, now it wont start. ill look into the power valves if i figure it out Share this post Link to post Share on other sites
Big_G_Hall Posted March 25, 2010 i cleaned the air filter and spark plug (which was wet and fouled) and today it wouldn't crank, it would just start and sputter out for 2 seconds, this is turning me away from 2 strokes. Yeah sounds like it's running rich. First clean your carb and check the size of the jets. Then put in a new plug. Most def buy a manual ASAP. And yeah chilax man, everything needs maintenance. And generally speaking if it starts running like crap you probably don't wanna keep riding for another 2 hours... Share this post Link to post Share on other sites
FPMXer Posted March 26, 2010 How did you clean the air filter? What type of oil did you put on it? What pipe are you running? Sounds like the jetting is too fat! Share this post Link to post Share on other sites
sheas93 Posted March 26, 2010 it has a fmf fatty on it with the factory silencer, the air filter is fine, i've been doing air filters for a while. ima mess with the carb, give it a good cleaning. and recommendations on adjustments i should do for the carb? or is 32:1 too rich or a premix? Share this post Link to post Share on other sites
KcDavis My Ride Posted March 26, 2010 Don't change the mix ratio, that won't fix anything. Most likely you have a jetting issue. Keep in mind this jetting recommendation from FMF is based off of 0-1500' elevation and moderate temps around 70*. You really need to get a manual, because it also has a chart in it for adjusting your jetting for different temps and elevations. http://www.fmfracing.com/TechSupport/JettingCenter http://www.tradebit.com/filedetail.php/90159454-honda-cr-250-r-service-manual-2000-2001 Share this post Link to post Share on other sites
willierides Posted March 27, 2010 Or a leaking crank seal......can cause "rich-like" symptoms... Share this post Link to post Share on other sites
sheas93 Posted March 27, 2010 dude, you guys are so much help, as soon as i get a good free afternoon ima do some of yalls suggestions. Share this post Link to post Share on other sites
sheas93 Posted March 31, 2010 i just tested the spark, not spark! unhooked the killswitch and started it in 2 kicks. braaaaaaaaaaambrambrambram i just have to stall it to stop the engine now haha Share this post Link to post Share on other sites
slomojo My Rides (4) Posted March 31, 2010 Them Dang 2 strokes!!!!!!!!!!!!!!!! Share this post Link to post Share on other sites
