2003 Yamaha YZ 250 Logo

Related Topics:

A
Anonymous Posted on Mar 19, 2012

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

The bike was running fine but it started bogging really bad and dying. it would start and run fine again for a little bit but then bog again. i cleaned the carb and it didnt fix the problem. the bike has good spark. now the bike will start and idle, but it idles like the choke is stuck on. then as soon as i give it throttle it bogs even worse and dies. i checked the choke and it is functioning fine.

5 Related Answers

Anonymous

  • 311 Answers
  • Posted on Jul 31, 2009

SOURCE: throttle bog out

hi,this may help,check the inline fuel filter and the air filter,if it has been sitting that long the fuel filter may have gummed up(a slightly gummy residue left behind after fuel evaporates) the engine will run ok at low and medium throttle but the filter will be quite restrictive once the load goes on,change the filter and clean the air filter and you might find the problem disappears...hope this helps...cheers

Ad

Anonymous

  • 86 Answers
  • Posted on Nov 10, 2009

SOURCE: my yz2f0f starts/runs (idles) fine while being choked...

sounds like you might have some trash in carb being a clogged pilot or main or needle seat in not letting in the proper amount of gas check all passages and use fresh gas if it has been sitting

bazzz7071

bazzz7071

  • 342 Answers
  • Posted on May 03, 2010

SOURCE: 2001 yamaha ttr 250, starts, idles ok, bogs at acceleration

Has the bike been stored for any long length of time?
old fuel in the carburetor will turn to a varnish like residue blocking the jets,or possibly water in the carburetor.

Testimonial: "The bike was not stored and was ridden regularly, but it still sounds like it could be the carburetor. Thanks for your insight."

Anonymous

  • 1 Answer
  • Posted on Aug 07, 2010

SOURCE: Yamaha 2001 ttr 250. Bogs above half speed, under load

I have the same problems with my 1999 TTR 250, were you able to find out anything?

Walt
[email protected]

Anonymous

  • 78 Answers
  • Posted on Feb 20, 2011

SOURCE: I just put a new

if the bike was running fine before you replaced pipe,you may need larger jets,or richen fuel mix,also check the reed valve it may be on the weak side.try a new spark plug also if you have not already replaced it.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
2answers

So my GSXR 600 starts and idles just fine but bogs down when you give it gas when you twist the throttle it bogs down what would cause that

Hello. It seems you have a mixture/carburetor problem; may be running too rich. By you 'accelerating' the engine, that compounds the problem. Is your bike carbureted or fuel injected?
1helpful
2answers

Starts and idles fine runs half throttle when fuel is applied

Harry, dirty carb or injectors.
Check the attached links,Manuals and guides, Good luck with your Bike
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

ATV TROUBLESHOOTING AND MAINTENANCE
ATV Service and Repair Manuals
http://www.carlsalter.com/motorcycle-manuals.asp
Jan 06, 2016 • ATVs
0helpful
1answer

2006 attic cat 400 runs great in 4x4 but when you hit the switch to 2x4 runs bad like it's booging down

'03 400 backfiring/bogging under throttle - ArcticChat.com ...

www.arcticchat.com > ... > ATV's > General ATV Discussion
Apr 3, 2007 - 7 posts - ‎7 authors The engine would only sputter and bog down, kinda like the choke was hung. ... I didn't remember the fan running, so I checked the fan fuse, but it was ... of the windings and cause a misfire, so bad that it would kill the bike. '07 F8 intermittent start and bog issue - ArcticChat.com
10 posts
Dec 23, 2012
Arctic cat suzuki 700 efi wont start - ArcticChat.com ...
10 posts
Apr 28, 2012
400 4x4 idles but bogs out when throttle pressed ...
10 posts
Jun 29, 2011
cat is slowly dying
10 posts
Oct 10, 2008
More results from www.arcticchat.com
Oct 21, 2015 • ATVs
0helpful
1answer

2003 suzuki marauder vz800 bogs out when riding

Run some seafoam through it. Empty the fuel in the bowl and fill the same amount of seafoam. start it run it for a min then let it sit over nite. hook all back up run it for ten mins or so and see what happens. If that dosent help maybe a re jet will do it. Punch this all in youtube also. some really good videos on this exact same problem!;)
0helpful
2answers

99 yz 125 bog at high rpms

most likly needs new rings-or bad plug if you are lucky
0helpful
1answer
0helpful
2answers
1helpful
1answer

1994 yz 250 bogs down

Have you cleaned the carburator ? It seems the main jet has some kind of obstruction.
Try cleaning the carburator and well a tune up would be fine too after the clean , check the plug/s & air filter too.
Not finding what you are looking for?

584 views

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

vince

Level 3 Expert

2530 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1212 Answers

littlewheel

Level 2 Expert

122 Answers

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

Answer questions

Manuals & User Guides

Loading...