Question about Yamaha YZ 250 Motorcycles

2 Answers

Hi. i have a yz250 1993. i was just going around a field slowly. try to get my son the go a little faster on his cr125. then the 250 just stopped. and would not start again. took the plug out and it was black and wet. any idea what is wrong?? i am not very good with fixing bikes. use to race when i was a kid. but now i have to learn about fixing them . hope you can help. thanks dean

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,510 Answers

That is the indication of an over rich mixture. The plug is now carboned up and needs a good clean or replacement before it will function again.
Was the choke by any means closed or partially closed when this happened? Is the air cleaner clean so that it is not restricting air flow or is the float not stuck so that the carburetter float level is too high in the float chamber.
Those are the normal things that would cause that condition.

Posted on Mar 28, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

After doing what hans has R'mended I would check your air/fuel screw usually 1.5 - 2 turns out is about right, & ensure for yz250 fuel premix of 35:1 found runs best. Also before fiddling with jetting etc test different brands of petrol, EG my yz250 would foul plugs every few hrs at ratio of 35:1 on Shell premium, but on Caltex vortex with the motoul 800 premix oil was perfect, smal plug 12 months now. U see the premium petrol has various detergents that help clean out injectors in cars & new 4 stroke bikes but on carb bikes U really need to find one that suits the bike. :-)

Posted on Mar 12, 2013

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

Tip

Roller Coaster Kingdom Slow Performance Tip


When you are playing the Facebook game Roller Coaster Kingdom, does it run slowly? There are a few good tips to use to make Roller Coaster Kingdom faster if it is running too slow.
Fix Roller Coaster Kingdom from Running Slow
1. Use a lower impact web browser, like Google Chrome. Firefox is a little better than Internet Explorer, but Chrome is the best. You will see a noticeable difference.
2. Close all other programs and browser windows.
3. Don't try to play the game when you have guests in your park. It isn't going to hurt you to send them all in at once, but if you try to play when they are running around then watch out. Make sure to get all your business done before hand, and then send them in before you quit.
Finally, we have to remember that the game is programmed to require a pretty fast computer. If you don't have the newest machine around, you can expect the game to run slowly. Hopefully in the future Zynga will try to reduce the system resources that this Facebook game takes up, but until then we are all going to have to utilize these performance tips!

on Sep 16, 2010 | Facebook Apps

1 Answer

Mower seems to be slowing down no matter how hard you push down on the forward peddle


That sounds like the drive belt is either stretched (requiring retensioning) or nearly worn out (requiring replacement). Retensioning may not be very difficult - it may require only a simple linkage adjustment.

Jul 22, 2014 | Cub Cadet I1042 42" 18HP Zero Turn Tractor...

1 Answer

2009 ford mustang v6, standard, will not accelerate, no matter in which gear I am in why?


Sorry old son but your clutch sounds like it has gone to the big junk yard in the sky reserved for dead clutches . When a clutch starts to slip it will continue to do so until that is all it will do . solution a new clutch is required .

Nov 19, 2013 | Cars & Trucks

2 Answers

After selecting disc it spins a few times then stops and ejects


Hello
The laser pickup unit is defective. Replace it with same type and number. OK.

Jan 15, 2012 | Wurlitzer Jukebox CD Player

1 Answer

1992 Olds Silhouette drivers side window will go up slowly. I will go down fine, just up it will go a little then stop. I wait a while and it will go up a little and stop. It could take fifteen minuets to...


could be a weak motor, But first I would add just a little lube to the window rails to see if that helps, the rubber around windows gets hard and brittle with time, when the window goes down the weight of the glass helps it drop , but on the way up its having to lift the whole thing,

May 31, 2011 | 2000 Oldsmobile Silhouette

1 Answer

Cordless Sawzall #6515-20. Cutting with it and it just stopped. Changed battery no go. tried moving the blade manually and it moved slowly a little and that was it. Took apart and tested the switch with a...


the field unless dropped is a permanent magnet and WON"T fail. I would look at the contacts from the battery to the saw. This battery has a sometimes problem with heating up and makes contact difficult. you can usually see where the housing is distorted in the contact area. if you have tested the switch and sounds like you know how to use the meter check the continuity/resistance across the brush leads and while doing this turn the armature slowly to check for open portions of the commutator. if all good there then your power supply is the area of concern. Let me know if I can help anymore. And did you call the 1-800-sawdust number.

Apr 12, 2011 | Milwaukee Tool Milwaukee Cordless Sawzall...

1 Answer

I Have A 93 Ford Escort Lx Im Having A Problem Accelerating After Driving It For About Ten Minutes I Will Drive It For A Little Then When I Come To A Stop Light It Sputters And Jumps Around And Sometimes...


By the sounds of it, its like once your car gets hot its starts playing up. You should run a compression test on all ur cylinders..you can get a tester from your local automotive store quite cheap, you just screw it in or shove it in and hold it, start the car and use the throttle cable hinge to rev the car slowly up to redline.. do that while the engine is quite hot though to get a more accurate reading, especially because i think thats when your car starts playing up (when its hot) im just going to say it should be around 140 for all cylinders.. just double check that and cross check your readings with ford. It also could be a ECU problem, once your car is running hot (normal temp) the tuning is wrong.

Sep 09, 2009 | 1993 Ford Escort 4 Door

2 Answers

Psp original fat kind wont read disks


you can find a used fat modle on crages list for around 40 bucks, and used fat ones at a place like game stops 70-90. one option i would try is a little rubbing alcohol on one side of a Qtip, wipe the lazer eye very gently with the wet side then dry it with the other end of the Qtip, let sit for about 10 mins and giver a go. (DO THIS AT OWN RISK) =D if your very gentle you wount mess it up, the eye is glass and some times it just gets dusty. hope it helps

Jun 11, 2009 | Sony PlayStation Portable (PSP) Console

1 Answer

How do i take photos indoors/ what settings do i use?


alexisalejan,

well first how far away from the stage will you be?
will you be using available light or a flash unit?
shutter speed and f-stop depend on the light source and film speed. (iso )
the faster the film the less you have to use flash, the lower the f-stop the less depth of field you have, the kind of flash is important, most flash units are good for only around 20 ft.
i would use a high speed film and not use flash. flash will kill any colored lights. try to keep the f-stop at least f/8 and the shutter speed no less than 1/60 sec. have fun.

Dec 13, 2008 | Nikon F60 35mm SLR Camera

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

266 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...