Jump to content

2009 50 sx will only idle at high revs

Recommended Posts

 I have picked a 2009 KTM 50sx for my son and it will only idle if the idle screw is turned way up.

   it will only start if the choke is on either hot or cold

  Any ideas ???? before i rip into it

Share this post


Link to post
Share on other sites

Ya my sons is finicky too it's the pilot jet did you open the air screw at all?

Share this post


Link to post
Share on other sites
i haven't had a good chance to look at it yet.
turned the idle down and all it wanted to do was die and stop
 

Close the air screw in then back it out 1-1/2 turns if the bike still idles high open the screw quarter incriments. My sons is the same way it needs to be rejetted pilot jets to small.
  • Like 1

Share this post


Link to post
Share on other sites
ok sweet as....... i'll give that a try first.
once it does die...it will only re start with the choke up
 

It's the jetting they may be dirty. I'd bet the carb needs a good cleaning and air filter.

Share this post


Link to post
Share on other sites

that was my first thought......air cleaner is dirty.

haven't had a chance to pull it a part yet....hopefully i'll get a chance over the weekend

  • Like 1

Share this post


Link to post
Share on other sites

I would check the stator also. I had problems with my son's and the stator was going bad. It would run but not idle and it would cut out once on the gas.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:


×