Results 1 to 6 of 6
  1. #1
    T5Racing's Avatar
    Join Date
    Feb 2009
    Location
    Corpus Christi, TX
    Posts
    264

    Not reaching full rpm

    Took the ski out for the first time this year. The ski probably only sat for about 5 months with starting it every month. Out on the ride the ski only it around 4-5 thousand rpm, so I brought to shore. I pulled the supercharger and checked the slip and it was good. I checked the compression and all three were good. Took it out again and still it would not reach full rpm, it kind of surged around 5-7 thousand rpm. Plugs did look a little white. What is a good thing to check next......coils?, injectors?

    Thanks


  2. #2
    xxx2's Avatar
    Join Date
    Oct 2006
    Location
    panama city bch, Fl
    Posts
    421
    +1
    35
    Fuel pressure?
    Last edited by xxx2; 05-05-2015 at 02:57 PM.

  3. #3

    Join Date
    Mar 2006
    Posts
    1,833
    +1
    119
    spark plugs.

  4. +1 by:


  5. #4
    Seadoo112's Avatar
    Join Date
    Dec 2013
    Location
    Florida
    Posts
    56
    +1
    1
    It could be just as simple as bad gas or fouled plugs

  6. +1 by:


  7. #5
    Gus13letter's Avatar
    Join Date
    Apr 2008
    Location
    Tampa Bay, FL
    Posts
    8,136
    +1
    822
    Sound like bad fuel from sitting. Several folks I know that let the ski sit for a few months had similar issue with Yamaha. After running it for a while it woke up. If you can, drain the gas and put fresh gas in it. How much gas did it have? Did you put fresh gas in it?

  8. +1 by:


  9. #6
    Mod less, ride more! troyheb's Avatar
    Join Date
    Jul 2007
    Location
    Nederland, Texas
    Posts
    8,725
    +1
    1,267
    My vote is for bad gas and plugs.


Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 00 gtx di not reaching full rpm
    By derekshep in forum 2-Stroke Performance
    Replies: 0
    Last Post: 07-26-2013, 09:10 AM
  2. 1998 GP1200 not reaching full RPMs
    By Sydwayz in forum Yamaha Open Discussion
    Replies: 10
    Last Post: 07-08-2013, 08:44 AM
  3. 1998 GP1200 not reaching full RPMs
    By Sydwayz in forum Yamaha Old School Skis
    Replies: 3
    Last Post: 07-06-2013, 09:03 PM
  4. 03 msx 140 not reaching full rpm??
    By REG-DOG in forum MSX/Matrix
    Replies: 6
    Last Post: 08-10-2010, 08:24 AM
  5. 96 XP not reaching full RPMS consitently
    By DarthAWM in forum 2-Stroke Performance
    Replies: 14
    Last Post: 04-17-2008, 10:59 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
  •