Results 1 to 7 of 7
  1. #1

    Problem with high r.p.m.

    Had my first testride with my 250x (35hours)this weekend. Was great, but when riding at WOT or almost for a while, it startet to misfire and I could only run about 25mph. If I pressed tha gas harder it misfired. Stopped for some minutes and cooled down. Then it worked fine until I run it hard again. What could be wrong?


  2. #2
    benjahw benjahw's Avatar
    Join Date
    Jan 2008
    Location
    Naples, Fl
    Posts
    467
    +1
    30
    Quote Originally Posted by sigga View Post
    Had my first testride with my 250x (35hours)this weekend. Was great, but when riding at WOT or almost for a while, it startet to misfire and I could only run about 25mph. If I pressed tha gas harder it misfired. Stopped for some minutes and cooled down. Then it worked fine until I run it hard again. What could be wrong?

    air intake might be loose. i had the same problem. dealer tightened it so i cant give you step by step to tighten it up. i dont think it is too hard. its warranty tho it thats yor problem

  3. #3
    2005 RXT Red08Ultra250's Avatar
    Join Date
    Feb 2008
    Location
    Dunedin, FL
    Posts
    908
    fouled plug?

  4. #4
    WaterScooter's Avatar
    Join Date
    Jul 2007
    Location
    Tally, Florida
    Posts
    125
    plugs?

  5. #5
    Thanks. Got spear sparkplugs for my next ride. Hope it's that easy as my dealer is 600km away (Norway)

  6. #6
    English Bob's Avatar
    Join Date
    Jun 2007
    Location
    Southern UK
    Posts
    280
    Quote Originally Posted by sigga View Post
    Thanks. Got spear sparkplugs for my next ride. Hope it's that easy as my dealer is 600km away (Norway)
    Gotta be worth a try....mine did the same as yours...removed the plugs they looked perfect....changed them anyway and it cured it, so what I,m sayin is there may not be any obvious damage to plugs but change em anyway...good luck.

  7. #7
    Formerly Ultra250 TN Aquaholic6801's Avatar
    Join Date
    Feb 2007
    Location
    Old Hickory,Tn
    Posts
    5,446
    +1
    650
    Quote Originally Posted by sigga View Post
    Had my first testride with my 250x (35hours)this weekend. Was great, but when riding at WOT or almost for a while, it startet to misfire and I could only run about 25mph. If I pressed tha gas harder it misfired. Stopped for some minutes and cooled down. Then it worked fine until I run it hard again. What could be wrong?
    Welcome to the Forum, theres a lot of infomation in the Search function,and take a look at some of the Stickys up top, and try a few search;s there is tons of info to be read.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Problem with high idle
    By dellen10 in forum Polaris Open Discussion
    Replies: 0
    Last Post: 06-28-2014, 06:57 PM
  2. Problems with 03' FX 140 High Rev
    By FJS_Repair's in forum Yamaha Open Discussion
    Replies: 4
    Last Post: 10-17-2013, 08:24 PM
  3. 2 problems with Xl1200 limited high idle and wont shut down
    By wgmarti in forum Yamaha PWC Performance (2-stroke)
    Replies: 15
    Last Post: 06-16-2012, 08:29 PM
  4. High temp problem with stage II from Riva
    By GILRXP in forum 4-Tec Performance
    Replies: 5
    Last Post: 06-01-2006, 09:59 PM
  5. Found my Problem with My RXP after Service.
    By Water4fire in forum 4-Tec Performance
    Replies: 5
    Last Post: 06-20-2005, 03:12 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •