Page 1 of 2 12 LastLast
Results 1 to 10 of 14
  1. #1
    wolftrader's Avatar
    Join Date
    Jul 2007
    Location
    Eagan MN
    Posts
    71
    +1
    1

    08 Ultra 250x problem

    My boat has been running trouble free and unmodified, last ran it two weeks ago no problems.

    Put it in the water today, was idling around a couple minutes waiting on my buddy and then felt a "blip" in the engine, we were on the mississippi and it felt like I sucked up a bag or stick, I ran the throttle up and it felt different, almost like the engine wasn't running right and the exhaust note was different. The boat would jump up on plane, but didn't sound right and was underpowered.

    We pulled the boat out on the trailer and the impeller / shaft / intake were all spotless, thought maybe bearing, but no flex or issues apparent there. (I've had a bad bearing before and this doesn't feel like that) Supercharger belt intact.

    I'm thinking that this is something new and I'm wondering if it might be related to the supercharger and how I might go about diagnosing that.... thinking back on my time on the water today, my supercharger "whine" was absent when I got on the throttle.

    Any help would be appreciated, we're planning a Lake Superior trip next weekend and I'm hoping to get it back up and running.

    Thanks,
    Steve


  2. #2
    wolftrader's Avatar
    Join Date
    Jul 2007
    Location
    Eagan MN
    Posts
    71
    +1
    1

    Any suggestions on diagnosing?

    Any thoughts or ideas on my problem? Boat starts and idles fine, when I run the throttle up the exhaust note sounds "odd" and it is underpowered, similar in sound and effect to a ski that has sucked something in the intake. I'm wondering if something is disconnected or loose, so I'm going through everything I can think of and find that would make sense..... I'm at 140 hours on the boat, all by me since new.

  3. #3
    UltraKvz's Avatar
    Join Date
    Feb 2011
    Location
    Earth
    Posts
    378
    +1
    23
    Rpm's and boost?

    Check your airhorn(sucking against the hull) and hoses.

  4. #4
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,763
    +1
    617
    Are all spark plugs ok. You sure its not a miss

  5. #5
    devils ride 250's Avatar
    Join Date
    Mar 2010
    Location
    lehigh valley pa
    Posts
    775
    +1
    124
    Ya sounds like plugs. Please let us know

  6. #6
    wolftrader's Avatar
    Join Date
    Jul 2007
    Location
    Eagan MN
    Posts
    71
    +1
    1
    Quote Originally Posted by devils ride 250 View Post
    Ya sounds like plugs. Please let us know
    Haven't checked them yet, will do thanks!! Started and was idling like a champ and then a "blip" in the engine sound. Do plugs fail in an instant like that?

  7. #7
    wolftrader's Avatar
    Join Date
    Jul 2007
    Location
    Eagan MN
    Posts
    71
    +1
    1
    Thanks for the suggestions, will check both. My Polaris Virage TX did have the airhorn come loose and suck up to the hull, it did have that power sucking effect

  8. #8
    wolftrader's Avatar
    Join Date
    Jul 2007
    Location
    Eagan MN
    Posts
    71
    +1
    1
    Quote Originally Posted by UltraKvz View Post
    Rpm's and boost?

    Check your airhorn(sucking against the hull) and hoses.
    Loose airhorn!!! Do you guys have any tips on getting the airhorn to stay in place better? Maybe a little silicone on the groove?

    Thanks guys, I'll be replacing the plugs as well.

    Steve

  9. +1 by:


  10. #9
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,763
    +1
    617
    Silicon, sikaflex, superglue anything that will glue plastic and rubber

  11. #10
    devils ride 250's Avatar
    Join Date
    Mar 2010
    Location
    lehigh valley pa
    Posts
    775
    +1
    124
    I've had plugs fail in an instant. It's wierd. They are not cheap either.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 08 Ultra 250x Problem
    By PDQ in forum Kawasaki PWC Performance (4-stroke)
    Replies: 14
    Last Post: 07-29-2014, 09:11 PM
  2. 08 ultra 250x sc problem?
    By drgballz in forum Kawasaki Open Discussion
    Replies: 7
    Last Post: 02-14-2013, 11:32 PM
  3. '08 Ultra 250X Tubing
    By SE TX Rider in forum Videos & Pictures
    Replies: 2
    Last Post: 05-28-2008, 07:09 PM
  4. 08 ultra 250x
    By gary in forum Kawasaki PWC Performance (4-stroke)
    Replies: 11
    Last Post: 05-08-2008, 11:16 PM
  5. The differences from 07' to 08' Ultra 250X
    By Skips313 in forum Kawasaki PWC Performance (4-stroke)
    Replies: 28
    Last Post: 02-09-2008, 01:03 AM

Posting Permissions

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