Results 1 to 3 of 3
  1. #1

    Full throttle bogging

    I have a WRA700S, Yamaha Waverunner 3GP

    been struggling with throttle bogging since a carburetor rebuild done in July. Before the rebuild I couldn't get full throttle, more than 3/4 Throttle made 0 difference in speed. It also would sputter if I mashed the throttle out of the hole.

    I discovered the inside of the carburetor was pretty badly corroded, so I cleaned it carefully, ordered a rebuild kit, and rebuilt it. Now I am a bit stuck with a throttle issue, it fires up and idles beautifully, the sputtering issue is gone as well, however, now I am stuck with what feels like a "lowered rev limiter" If I mash the throttle it will rev then hit a wall, and I can hear the motor trying to pull in air, but not revving any higher. I made a short video of what its doing, although its on land and the ski doesn't have a flush kit so I don't want to run it particularly long.

    Any thoughts? My only thought is the pop off pressure, the new kit came with springs, but none matched the colors in the guide from Mikuni, so I went by length, I already ordered a replacement 115g spring straight from Yamaha just to ensure I am not using the wrong spring, but I have switched 2 out of the 4 I have, none of which changing my results.

    Any guidance would be well appreciated.

  2. #2
    Guidoo's Avatar
    Join Date
    Jul 2011
    Living outside of Charleston SC.
    Have you done anything with the fuel pump? It might not supplying enough fuel pressure at WOT. I've seen the diaphragms and check valve get hard with age.

  3. #3
    carb went through a full rebuild, all diaphragms have been replaced with new ones.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Ski bogs down when you push full throttle at a stand still
    By wgmarti in forum Yamaha PWC Performance (2-stroke)
    Replies: 11
    Last Post: 06-15-2016, 08:26 PM
  2. 2007 Yamaha GP1300R: Bog/Hesitation from 1/4 to Full Throttle
    By Cashito in forum Yamaha PWC Performance (2-stroke)
    Replies: 13
    Last Post: 02-05-2015, 08:56 AM
  3. XLT 800 Bogs Down at Full Throttle
    By llaskin in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 07-23-2009, 10:44 AM
  4. 94 SL750 cuts out and bogs at full throttle
    By raiderman444 in forum Polaris PWC Performance
    Replies: 3
    Last Post: 06-30-2009, 09:44 PM
  5. 96 SL700 bogs at full throttle
    By Nik33615 in forum Polaris Open Discussion
    Replies: 5
    Last Post: 07-30-2008, 01:30 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