Question about 2003 Yamaha WR 250 F

2 Answers

2003 Yamaha wrf 250 only runs with the choke on

I recently bought this bike from a friend due to a float bowl problem in the carb I have since fixed that and cleaned the carb at least 4 times. The bike runs good with the choke pulled out except for a slight throttle hesitation on the bottom end other than that it cranks fine even in the cold. the bike will not run at all with the choke pressed in. I know there is something wrong still,maybe timing issues i just dont know. someone please give me a tip its drivin me crazy, thanx.

Posted by on

  • yo2yo Apr 07, 2009

    i have a yamha 250F and the timing is out 23 deg can this be adjusted???

  • j_jewell_887 May 11, 2010

    Thanx knight007 the original problem with the float bowl was that the rubber in the gas valve had *** apart and had stuck above the float needle and was causing the bowl to overflow i have since cleaned twice and I am pretttty sure its clean im not sure were the mixture screw is though that may be a good idea to find

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 5,158 Answers

Possibly water in your fuel.... it's a small tank so just put about a quarter bottle of gas line antifreeze in the tank... it's alcohol so it will **** up the water. there is also the possibility the fuel is somewhat dirty... change the fuel filter as well

Robert

Posted on Feb 05, 2009

  • Roberta Smith
    Roberta Smith Feb 06, 2009

    Please consider bumping this rating to a fixya... thanks

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Yamaha Master
  • 767 Answers

Hi jjewel,
Theres seems to be some kind of restriction of gas flowing into the inlet valve at suction, have you set the mixture screw right?
Are the pilot and main jet free of obstruction?
Can you please let me know what was the original problem with the float bowl?
I may be able to post you more on the issue.
cheers!.


Knight. (Yamaha seca XJ750 '81)

Posted on Feb 05, 2009

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:

1 Answer

Any thoughts on 2006 Virago 250 with gas leaking out of right exhaust pipe?


Hi, Andrew and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
Gas coming out of exhaust help
Fule Dumping out of exhaust will not start
Yamaha VIRAGO XV250S Owner Manual
OEM parts for Yamaha
Yamaha XV250G Supplementary Service Manual

May 05, 2013 | 2006 Yamaha Virago 250

1 Answer

2003 yz 250 starts and idles but runs rich and bogs as soon as the throttle is applied


Hi, Anonymous and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Intake system air leak.
4. Vacuum piston malfunction.
5. Accelerator pump leaking or no output.
6. Plugged bowl vent or overflow.
7. Fuel level in bowl too low.
8. Restricted fuel supply passages.
9. Plugged jets or passages.
10. Worn or damaged needle or needle jet.
11. The enrichner valve not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
2002 yz250 idles fine but bogs and tries to die when twisting the throttle...
Bike dies when you give it throttle
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Mar 19, 2012 | 2003 Yamaha YZ 250

1 Answer

Yzf 250 carb settings not right.Bike is not running properly and has no power.keeps spluttering and cutting out. Can't get any idle adjustment


Drain the carb float bowl. Condensation from the gas tank has probably made its way into the bowl. If that doesn't help, remove the carb then remove the float bowl and use spray carb cleaner to clean the interior of the carb. Spray into every opening you can find.

May 31, 2011 | Yamaha Fuoco 500ie Motorcycles

1 Answer

Every time i lean the bike over 1980 yz 250 gas just pours out the overflow and it wont start. What is wrong?


The float in the carb is stuck open. Remove the float bowl, dump out the gas and trash in it then spray the float needle area while gently lifting then dropping the float. The needle should free up. Put the bowl back in place.

Mar 20, 2011 | 2003 Yamaha YZ 250 F

1 Answer

Turn on gas and gas comes out almost all the lines off the carb. bike has only been rode 2 times. Bike runs fine but choke doesnt work normally.


The problem is with your float inside the carb. It's either stuck or your needel/seat is sticky or there's a piece of trash holding it open. There are several causes but it's a simple fix.

The best solution is to tear the float bowl off and take a look. It can be done without buying any parts.

The proper float level for this bike is between 5.5 and 7.5MM.

I hope this helped.

Mar 08, 2010 | 2004 Yamaha YZ 250

3 Answers

Yamaha blaster runs but wont rev


ALWAYS have a fire extinguisher on hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb.
Before putting the slide back in the throat of the carb, move the clip on the jet needle one notch lower. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

849880b.gif Please rate this solution. Thanks!

Jun 21, 2009 | 2003 Yamaha YZ 250

1 Answer

How to drain fuel from carb bowl?????


there should be a screw or a larg looking bolt on the bottom of the float bowl (carb) remove it and it will drain use a rag to catch it and drain your tank add fresh gas (if it dose'nt run right you may have to clean the carb)

Apr 04, 2009 | 2005 Yamaha WR 250 F

2 Answers

2003 wrf 250 yamaha carb trouble


Just a thought, At first I would suspect low cicuit on carb being plugged or mixture passage. But after reading your cleaning carb I would be inclined to say check your timing as long as you are sure your carb is cleaned well and adjusted.

Feb 05, 2009 | 2003 Yamaha WR 250 F

1 Answer

2003 yamaha wrf 250 carb problem


(1) You will need to adjust the float pin to get the correct amount of fuel in the float chamber of the carburator.
(2) You will also need to set the air-mixture screw , but before you do tht remove the spark plug and see whats the condition of it, is it black , is it brownish, or is it whitish.
If its blackish = means rich too much of fuel, if its browinsh= ok, if its whitish = its too lean.
(3) As for hesitation, check the needle at carbs piston on the accelerator cable, and blow the main jet with high pressure.
(4) Check too the spark plug gap and if its as per the manufacturers specs.

Hope this helps!

Feb 05, 2009 | 2003 Yamaha WR 250 F

1 Answer

Yamaha 2003 wrf 250 start probs startermotor easily turns over motor but very rare 4 bike to start kick starts ok but abit hard to start cold


hey m8,, sounds like u have a bit **** in the carb floating arround the jets m8,, wen its warm and bein used the dirt will flow round the carb untill left overnight to settle ,,that will block the fast idle jet,, need to take the bottom of the carb off,,ie the float bowl wip out the jet that the needle sits in to,, this will have about 4 little holes threw the stem of the jet, poke a pin or needle threw them and the main jet,, untill u see light threw the holes,, clean out the float bowl,, that should sort it,,

Dec 31, 2008 | 2003 Yamaha WR 250 F

Not finding what you are looking for?
2003 Yamaha WR 250 F Logo

342 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

mikeuk

Level 2 Expert

61 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1128 Answers

D. E. Hev

Level 3 Expert

1132 Answers

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

Answer questions

Manuals & User Guides

Loading...