Jump to content

Dt125r 2004 bogging


Recommended Posts

Hello people!

Just bought a perfect example of a dr125r just got a minor problem with I believe the carb-ill explain in a little detail.

Pulls from standstill up to 9000ish rpm and then I get bogging and stuttering, noticed it more today when I took her out on some busy roads.

Only bought it Friday night

Just wondering if anyone has any advice or suggestion?

Bike is fully derestricted with a full dep exhaust and snorkel removed, previous owner says he got carb jetted up in a garage but I don't believe him.

Any ideas what jet she should have in?



Link to comment
Share on other sites

Do you want an ad-free experience? Join today and help support the Yamaha Owners Club.

Move the needle clip in the carb down 1 notch = more fuel for top speed running.

Airhead ru shure about the 240 stock seemes to me someone had a bad melt down with a 210 stock jet??

Link to comment
Share on other sites

They did increase the jet size as standard from 210 to 240 from 1997 onwards, starting with the fist 4BL model. They then changed it back in 2004/05 with the first DT125RE. Back to 210. I'm guessing that was because of how restrictive te exhaust was with all the CAT. If you've got a DEP on I'd start on a 250 and work down if you need to.

Link to comment
Share on other sites

honestly im not messing on with jets or anything like that!

had enough of trying to setup carbs, if the spark plug cand filter changes dont make a difference ill be thinking about decoking exhaust then if no joy ill be putting it into a shop for them to set it up!!

Link to comment
Share on other sites

As long as the plug is sparking well, it's working. Changing it will be a waste of time/money if its working. You'll want to do a plug chop and see what the mixture is like. If it's running lean then you'll have a good chance of holeing the piston and ending up needing a full engine rebuild. If it's running rich then it will not be performing as well as it could and you may foul the plug.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...