Page 1 of 2 12 LastLast
Results 1 to 10 of 14
  1. #1
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    1,005
    +1
    100

    Rough idle-up to 4K then clears

    I am out riding right now and Iím the idle is so bad itís as if I have a coil unplugged. It clears up passed about 4k rpm but below that it sounds/feels awful. Could it be a bad plug already? Barely have 25 hours one it. And replaced them already as per dean. Afr at idle is 10.9-11.1


  2. #2
    Impulse20098's Avatar
    Join Date
    Sep 2016
    Location
    Houston, TX
    Posts
    139
    +1
    31
    Quote Originally Posted by DanSVHO View Post
    I am out riding right now and I’m the idle is so bad it’s as if I have a coil unplugged. It clears up passed about 4k rpm but below that it sounds/feels awful. Could it be a bad plug already? Barely have 25 hours one it. And replaced them already as per dean. Afr at idle is 10.9-11.1
    That is incredibly rich at idle.

  3. #3
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    1,005
    +1
    100
    I feel like it fouled my plugs or something. It was fine at my Bahamas trip last week. I think he made it way to rich at idle. Damn. It was getting worse I barely made it back to marina. It would cut out endless I gave it some throttle

    Quote Originally Posted by Impulse20098 View Post
    That is incredibly rich at idle.

  4. #4
    Impulse20098's Avatar
    Join Date
    Sep 2016
    Location
    Houston, TX
    Posts
    139
    +1
    31
    Running it like that could foul plugs really fast.

  5. #5
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    1,005
    +1
    100
    Must have been what happened then. Feels/sounds like when you forget to plug in a coil.took a video when it started. Got worse as I headed back to dock.
    Quote Originally Posted by Impulse20098 View Post
    Running it like that could foul plugs really fast.

  6. #6
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    1,005
    +1
    100
    I just took plugs out to change them. Look at this!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	F9BDD81C-178A-4A0B-A84B-B66E23E09863.jpg 
Views:	176 
Size:	42.8 KB 
ID:	450501  

  7. #7
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    1,005
    +1
    100
    I added new plugs and problem is still there. Wtf! How could the tune change that drastically if it was running ok before? Canít get a hold of dean, getting a little worried. With everything disconnected it turns over and sounds fine.

  8. +1 by:


  9. #8
    Dg1148's Avatar
    Join Date
    Sep 2016
    Location
    New braunfels, TX
    Posts
    418
    +1
    36
    Quote Originally Posted by DanSVHO View Post
    I added new plugs and problem is still there. Wtf! How could the tune change that drastically if it was running ok before? Canít get a hold of dean, getting a little worried. With everything disconnected it turns over and sounds fine.
    Currently have the exact same thing going on with my ski. Dean told me to increase fuel pressure to 54/56 from 52. Didnít help much. Mine started out of no where too

  10. #9

    Join Date
    Jul 2017
    Location
    Bahrain
    Posts
    51
    +1
    1
    Adjust ur fuel regulator ur ski too rich

  11. #10
    Impulse20098's Avatar
    Join Date
    Sep 2016
    Location
    Houston, TX
    Posts
    139
    +1
    31
    Quote Originally Posted by DanSVHO View Post
    I added new plugs and problem is still there. Wtf! How could the tune change that drastically if it was running ok before? Can’t get a hold of dean, getting a little worried. With everything disconnected it turns over and sounds fine.
    Technically the tune can't change itself. If it was running fine before and then all of a sudden it starts going this rich theni would believe something else is going on. Is there anything that you changed on the ski from when it was running good till now?

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. Rough Idle
    By PreciousMetals in forum Yamaha PWC Performance (4-stroke)
    Replies: 12
    Last Post: 07-26-2018, 01:17 PM
  2. Replies: 8
    Last Post: 08-24-2014, 06:49 PM
  3. MSX140 rough idle/no idle
    By mike@detel.com in forum MSX/Matrix
    Replies: 21
    Last Post: 05-30-2013, 04:01 PM
  4. Ultra 250X Problems - Rough Idle, will not go past 25MPH, runs rough
    By troye in forum Kawasaki PWC Performance (4-stroke)
    Replies: 21
    Last Post: 10-09-2012, 10:47 AM
  5. Rough Idle
    By C11666 in forum Yamaha PWC Performance (4-stroke)
    Replies: 3
    Last Post: 07-24-2012, 08:47 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
  •