Page 1 of 2 12 LastLast
Results 1 to 10 of 14
  1. #1
    KawiScott's Avatar
    Join Date
    Feb 2014
    Location
    NJ
    Posts
    36
    +1
    3

    Air Leak past spark plug 300x

    I'm having air leak past my spark plug in cylinder 3. I put in New plugs and noticed my ignition coil lifted up from the air pressure. Took the plug out replaced with a new plug and same thing happened again. I then cleaned out the area where the plug sits hoping maybe it was some debris in there not allowing the plug to seat correctly. Anyone else have ideas? Have not been able to test this again yet.


  2. #2
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,763
    +1
    617
    Dont think it lifted the coil. It lifted the cap. Did you torque it correctly if so im guessing you cross threaded the head. You will need to get an insert.

  3. #3
    KawiScott's Avatar
    Join Date
    Feb 2014
    Location
    NJ
    Posts
    36
    +1
    3
    The plug fits in snug. And when removing the plug, it was screwed in. It threads in smoothly.

  4. #4
    Take the time to smile sirbreaksalot's Avatar
    Join Date
    Jun 2007
    Location
    Rockwall , Texas
    Posts
    3,948
    +1
    543
    How much air pressure are you feeling

    have u checked they r the correct plug
    and tried swapping plugs around to see if problem follows a faulty plug

    waz

  5. #5
    KawiScott's Avatar
    Join Date
    Feb 2014
    Location
    NJ
    Posts
    36
    +1
    3
    I am checking to see if any plug is faulty. The air pressure lifts the ignition coil. I have to lift out the ignition coil to bleed the air out before I can push it back down onto the plug.

  6. #6
    "just sayin".. jetdave56's Avatar
    Join Date
    Nov 2008
    Location
    JERSEY SHORE
    Posts
    4,153
    +1
    530
    Scott when you say "lifted up" does the black boot just lifts off the plug slightly so it's not making connection?

    Are your wires laying correctly , is each wire sitting in those black cradles according to specs?

    There should be good amount of marine grease around the whole length of the boot and enough that when you install boot over plug some oozes out...I pack that extra grease then around the boot.
    I had this happen to me too ,all the bouncing and jumping these skis do my boot lifted slightly,it might have been push up from hitting other wires on top of the manifold...

  7. #7
    KawiScott's Avatar
    Join Date
    Feb 2014
    Location
    NJ
    Posts
    36
    +1
    3
    Fixed the problem. It was a defective plug or crush washer. Was not seating right and having air blow by pushing the boot off. Rode the ski hard for a few days. All seems good now. Thanks for everyone's help.

  8. #8
    KawiScott's Avatar
    Join Date
    Feb 2014
    Location
    NJ
    Posts
    36
    +1
    3
    Fixed the problem. It was a defective plug or crush washer. Was not seating right and having air blow by pushing the boot off. Rode the ski hard for a few days. All seems good now. Thanks for everyone's help.

  9. #9
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,763
    +1
    617
    sounds very odd when in the first post you said you cleaned the plug tube and replaced with another plug only to still have the same problem. sounds like it may have been an owner mishap..

    Quote Originally Posted by KawiScott View Post
    Fixed the problem. It was a defective plug or crush washer. Was not seating right and having air blow by pushing the boot off. Rode the ski hard for a few days. All seems good now. Thanks for everyone's help.

  10. #10

    Join Date
    Sep 2006
    Location
    down under
    Posts
    645
    +1
    15
    There is an air bleed hole in the bottom of the plug hole. It is either blocked or not drilled from factory. YOu may need to remove exhaust manifold to clear hole.

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. Ultra 250X/260X/300X Spark Plug Torque
    By meangreenman in forum Kawasaki Tech Tips and Info
    Replies: 8
    Last Post: 08-30-2015, 07:20 AM
  2. Oil Leaking INTO spark plug well 2002 4-tec
    By Harsax13 in forum 4-Tec Performance
    Replies: 6
    Last Post: 05-26-2014, 12:13 PM
  3. any problem with doing a 2 stroke leak down test through spark plug?
    By mwinschel in forum Yamaha PWC Performance (2-stroke)
    Replies: 5
    Last Post: 08-25-2011, 09:56 PM
  4. Missing 500 rpm + rusty spark plugs = stock intercooler leak
    By Dan_FZR in forum Yamaha PWC Performance (4-stroke)
    Replies: 6
    Last Post: 03-21-2011, 05:27 PM
  5. 96 SL 700 Water leak around the Spark plug hole
    By friscoboater in forum Polaris Open Discussion
    Replies: 3
    Last Post: 08-15-2010, 10:18 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
  •