Results 1 to 2 of 2
  1. #1

    Question Ultra 150 freshly rebuilt, bogging down and won't top out!

    I have a 1999 ultra 150. I just rebuilt the motor. It has been board .5 over. Other than that it is completely stock! I put a 50:1 mix in the first tank. It was a little sluggish on take off and topped out at about 50-53mph. Before the rebuild the ski was much more peppie. I thought it was just the extra oil in the gas but on the second tank of straight 93 octaine it ran the same way! What could be causing this? I don't know exactly how fast the ski tops out at ( I only rode it on extremely choppy water) but I've heard anywhere from 60-78 mph (yes that's quite a big difference) but I'm pretty sure it's saposed to run faster than 50!

    Thanks for all your info!!!

  2. #2
    btldigger's Avatar
    Join Date
    Feb 2007
    lebanon tn.
    Did it hav steel sleaves in it? I hope so otherwise someone just screwed your cylinders. How does the compression reading look?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. ultra 300x bogging down and starting to stall when hitting 4000 rpm range
    By Marinedreams in forum Kawasaki How To & FAQs
    Replies: 6
    Last Post: 11-08-2016, 04:22 PM
  2. Replies: 7
    Last Post: 05-18-2012, 06:01 PM
  3. Ultra 150 Oil Question Yamalube 2W and TCW-3
    By cconigliaro in forum Kawasaki PWC Performance (2-stroke)
    Replies: 1
    Last Post: 01-01-2012, 07:53 PM
  4. 2001 GP1200R Running then bogging down and dying?
    By Emig5m in forum Yamaha PWC Performance (2-stroke)
    Replies: 22
    Last Post: 10-03-2010, 07:48 PM
  5. SLT 750 bogging down and other issues
    By jarcynvicnchris93 in forum Polaris Open Discussion
    Replies: 6
    Last Post: 05-29-2008, 08:12 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