Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 21
  1. #1

    Spark plug diagnosis (photos)

    My Ultra 150 has been losing power. I already had an issue with the pump and replaced it an it was running fine for about 8 hours. Then it start losing power again and was just bogged down.
    I notice one of the spark plugs is very metallic (3rd photo) and am wondering what this usually means? The first 2 photos are the other 2 spark plugs.


  2. #2
    do a compression test on all 3, could be aluminium

  3. #3

    Join Date
    Aug 2011
    Location
    Australia Melbourne
    Posts
    839
    +1
    137
    Quote Originally Posted by ss1289 View Post
    My Ultra 150 has been losing power. I already had an issue with the pump and replaced it an it was running fine for about 8 hours. Then it start losing power again and was just bogged down.
    I notice one of the spark plugs is very metallic (3rd photo) and am wondering what this usually means? The first 2 photos are the other 2 spark plugs.


    http://www.ngksparkplugs.com/tech_su...d.asp?mode=nml

    + Are all 4 plugs the same type/heat range?

  4. #4
    steve45's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    5,011
    +1
    283
    Leaner than $shit! No wonder it's losing power. I'd bet your well on the way to a hole in the piston on the gray plug.

  5. #5
    Boost whore
    Join Date
    Jan 2014
    Location
    Australia, Perth WA
    Posts
    255
    +1
    45
    Quote Originally Posted by steve45 View Post
    Leaner than $shit! No wonder it's losing power. I'd bet your well on the way to a hole in the piston on the gray plug.
    Looks black and rich to me

    I have always aimed for a coffee color

  6. #6

    Join Date
    Aug 2011
    Location
    Australia Melbourne
    Posts
    839
    +1
    137
    Are you all blind,,,,plugs are different colour. lean, Rich or Fucked to pass as normal

  7. #7
    Boost whore
    Join Date
    Jan 2014
    Location
    Australia, Perth WA
    Posts
    255
    +1
    45
    Quote Originally Posted by ange5583 View Post
    Are you all blind,,,,plugs are different colour. lean, Rich or Fucked to pass as normal
    Well I do wear glasses but what you seem to have a problem with is reading comprehension

    If you look in the quote which I had put up and thus was refering to, the originator of the quote was refering to a plug in particular

    Thus the fact that all the plugs are a different color is a moot point as they werent even in the equation


    Tl; dr

    I was replying to someone saying the third plug looked lean, me believing that it in fact looked rich to me

  8. #8

    Join Date
    Aug 2011
    Location
    Australia Melbourne
    Posts
    839
    +1
    137
    Quote Originally Posted by Azuras View Post
    Quote Originally Posted by ange5583 View Post
    Are you all blind,,,,plugs are different colour. lean, Rich or Fucked to pass as normal
    Well I do wear glasses but what you seem to have a problem with is reading comprehension

    If you look in the quote which I had put up and thus was refering to, the originator of the quote was refering to a plug in particular

    Thus the fact that all the plugs are a different color is a moot point as they werent even in the equation


    Tl; dr

    I was replying to someone saying the third plug looked lean, me believing that it in fact looked rich to me

    All the plugs are painting a picture......... Good place to start would be Winterstick suggestion.

  9. #9
    steve45's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    5,011
    +1
    283
    The insulators on the top two pictures are white--very lean. The bottom plug is gray--the color of aluminum--which is used to make pistons. Lean, white plugs turn gray when the piston starts to come apart. Black plugs, on the other hand, are well, black. They typically have fluffy looking carbon deposits.

  10. #10
    RLACEMAN's Avatar
    Join Date
    Aug 2011
    Location
    Random Lake WI
    Posts
    884
    +1
    54
    How much run time is on these plugs? The top plugs pictures are lean & the bottom definately has aluminum on it. If you don't have a hole in that piston, you will most likely find the top of the piston on the exhaust port side has begun to erode. Something is causing the ski to run lean and/or hot.

Page 1 of 3 1 2 3 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. How To: Spark Plugs... Many pics and details
    By Shibby1485 in forum Sea Doo How To & FAQs
    Replies: 60
    Last Post: 07-18-2013, 05:17 PM
  2. How-To: Spark Plugs
    By MikeTrin in forum Sea Doo How To & FAQs
    Replies: 9
    Last Post: 01-23-2009, 05:16 PM
  3. Spark plugs... pictures of old and new, Normal?
    By Shibby1485 in forum 4-Tec Performance
    Replies: 5
    Last Post: 07-08-2005, 10:12 PM
  4. Where to buy spark plugs??
    By mgo7483 in forum 4-Tec Performance
    Replies: 33
    Last Post: 07-08-2005, 07:44 PM
  5. Spark Plug gap??
    By Cutter in forum 4-Tec Performance
    Replies: 6
    Last Post: 07-07-2005, 03:47 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
  •