Question about 2003 Yamaha WR 250 F

1 Answer

I have a 03 wr 250, it idles ok but backfires and throws small flames from ex when throttle is opened fast, but not opened slowly,

Posted by on

Ad

1 Answer

  • 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
  • 8,909 Answers

Nothing wrong with a bit of overfueling, the flames are a bit of a worry though. If the ignition timing is too far retarded, the mixture will still be burning when it leaves the chamber. Also if the spark plug is gummed up, that may cause a problem of miss firing causing flames in the exhaust pipe.

Posted on Mar 27, 2011

Ad

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.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Very high idle after rebuilt carburetor on Chevy 250 l6. Choke is okay, no fuel leaks. Engine races at about 3000 rpm


Sounds to me like the throttle plate is too far open at idle. Look for something hanging up and holding the throttle more open that it should be-like the choke like the auto choke or the fast idle cam screw set to far in. Look up the fast idle speed adjust procedure in the books and check out how yours is set up. Also, if the carb was all the way apart the throttle plate may be off center on the throttle plate shaft causing extra air to bypass the throttle plate. Good luck.

Jan 03, 2015 | Cars & Trucks

1 Answer

My 96 suzuki quadrunner 250 and I thought my throttle cable was in a bind not in a bind idles fast when you turn right what is wrong


Possibly if moisture has got in and created rust then you have a problem. With the engine not running twist the throttle very slowly to full limit then let go the spring should snap the whole thing shut instantly. If this does not happen the cable is binding. Undo the cable at the twist grip end and get as much lube down it as possible a clamp type cable luber will help.

Dec 13, 2014 | 1997 Suzuki GSF 250 Bandit

1 Answer

2002 Honda CR 250 R high idle


Hi, Doctah and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector.
10. Multiple carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
03 CR250 fast idle
high idle dont know what causing it
CR250 2002 2003 pdf
http://www.partsfish.com/page/oem-parts-for-honda
http://owners.honda.com/assets/ownerlink/model/own_man/powersports/2007/2007_cr250r.pdf

Aug 27, 2012 | 2002 Honda CR 250 R

1 Answer

Yamaha yzf 250 high idle and over heating


Hi, Anonymous and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
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.
Dirt Rider Magazine
YZ250F Overheating WR YZ 250F
2001 2013 Yamaha YZ 250 Service Manual YZ250 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Mar 12, 2012 | Yamaha YZ 250 F Motorcycles

1 Answer

2001 WR250F WILL NOT IDLE AND BACKFIRES ON DECEL. AND SPITS/SPUTTERS WHEN THROTTLE IS APPLIED WHEN UNDER LOAD


these symptoms usually point toward lean on fuel for some reason
most common would be dirty or gummed pilot circuit and pilot jet I would remove carb and take out the pilot jet clean or replace with new - blow compressed air through the hole the pilot jet came out before reinstall
depending what altitude you are a bigger size pilot jet may assist this issue also but clean and replace original pilot jet and circuit first to confirm

Jan 02, 2011 | 2003 Yamaha WR 250 F

2 Answers

Adding small quantity of oil


Please use the oil cap. That is what it is for.

Oct 19, 2009 | 2003 Yamaha WR 250 F

1 Answer

How to tune a 2005 yz 250f? Idles too fast, pops


ok buddy on the carb will be 2 screws turn the idle one out to lowen idle and screw the mixture one in 1/4 of turns until it stop backfiring and thats it buddy 77fe3ed.jpg

Oct 07, 2009 | 2004 Yamaha YZ 250 F

2 Answers

1994 camaro 3.4 v6. backfiring and poping through intake.


I had the same problem, thinking it was bad gas, or bad wires, or even a clogged fuel filter, had the engine checked out by a reputable gear head. A head bolt broke, then a intake lobe from cylinder #4 spun round thus causing your car to constantly backfire, also check to see if your head gaskets aren't blown (water-n-oil), all these were found once the engine was disassembled. Good luck trying to find a good used 3.4

Mar 22, 2009 | 1995 Chevrolet Camaro

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

282 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

vince

Level 3 Expert

1211 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1147 Answers

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

Answer questions

Manuals & User Guides

Loading...