Results 1 to 6 of 6
  1. #1
    eurokidlt's Avatar
    Join Date
    Jul 2009
    Location
    Riverhead, NY
    Posts
    68

    Question RPM Drop off....

    Hello all, i got a new issue. Nothing crazy just an annoyance. My ski starts right up and is fun to ride all day, yay. BUT if i run full throttle from standing my RPM's will shoot up to 6800, and will gradually start dropping to 6650 as i am riding in a flat river at WOT for say one minute. And it will do this allll dayyy. WHY wont my RPM's stay at 6800 for as long as i got the WOT? Why the drop off?

    shall i gut the stock air box?


  2. #2
    WATER WOODY's Avatar
    Join Date
    Aug 2005
    Location
    Minden, Nevada, United States
    Posts
    10,664
    +1
    11
    Usually means your running out of fuel up top.

  3. #3
    WATER WOODY's Avatar
    Join Date
    Aug 2005
    Location
    Minden, Nevada, United States
    Posts
    10,664
    +1
    11
    Whats your jetting?

  4. #4
    Happily Self-Employed WFO's Avatar
    Join Date
    Nov 2005
    Location
    Houston, Texas
    Posts
    12,800
    +1
    449
    or heat soak

  5. #5
    eurokidlt's Avatar
    Join Date
    Jul 2009
    Location
    Riverhead, NY
    Posts
    68
    its all stock jetting, i have not touched the carbs since i bought it with 150hrs, now its at 210hrs. Only happens at top end (85 degrees out). Heat soak, hmm i can shut down and tie up on boat, have dinner, then start up get back into the river at 4500 RPM and then WOT and same thing would happen.

  6. #6
    All hail the Chief! fullboogie's Avatar
    Join Date
    Nov 2005
    Location
    Texas
    Posts
    3,155
    +1
    44
    That RPM sure is low for WOT...

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 2003 Sportster 4Tec RPM Dropping After Take Off
    By barriesportster in forum Sea Doo Sport Boats
    Replies: 3
    Last Post: 07-02-2014, 05:23 PM
  2. How much supercharger slip before RPM drops off?
    By cjo632racing in forum 4-Tec Performance
    Replies: 3
    Last Post: 05-03-2011, 07:00 PM
  3. Stage 2 GP12R RPM drop at WOT
    By Himes in forum Yamaha PWC Performance (2-stroke)
    Replies: 18
    Last Post: 05-27-2010, 11:05 PM
  4. Sudden RPM drop off around 3900
    By LakeDog in forum Yamaha PWC Performance (2-stroke)
    Replies: 4
    Last Post: 08-14-2008, 11:33 AM
  5. Look what the mailman dropped off...
    By GeoRXT in forum 4-Tec Performance
    Replies: 9
    Last Post: 11-18-2006, 12:48 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
  •