2002 380 DA Generator spark plug change

Discussion in 'Sport Yachts/Yachts' started by rrascher, May 27, 2022.

  1. rrascher

    rrascher New Member

    18
    Apr 2, 2007
    Sandy Springs, GA
    2002 380 Sundancer
    8.1S
    I have a 2002 380DA and the engine is running okay with no load but it struggles when there is a load placed on it. It also smells like raw gas. It’s not blowing black smoke.
    I want to try to change the plugs to start with but I can’t get the right socket on them. is there a special socket or some other tricks to get them out?

    Thanks,
    Ray
     
  2. stg099

    stg099 Active Member

    426
    Jun 30, 2013
    Chicago
    2013 370 Sundancer
    8.2L V-Drives
    Gas or diesel? I just changed my plugs out for a kohler 5ekd gas generator and used a standard spark plug socket without issue.

    I assume with the black smoke reference yours may be diesel?
     
  3. Phil S

    Phil S Well-Known Member

    Oct 16, 2020
    Taxachusetts
    2004 300DA
    5.0 Merc MPI
    Bravo III
    IIRC there's only 2 spark plug socket sizes for most -- 5/8 and 13/16 but don't quote me on that :eek:
     
  4. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx 502 mag
    2005 Baja 242 islander 496
    502 mpi Bravo 1
    496 mag B1
    try some deep metrics, some lawn equipment can have tight access, something will fit and it wont be specific to that engine
     
  5. Wanderer 290

    Wanderer 290 Well-Known Member

    659
    Jul 1, 2019
    Traverse City
    01 sea ray 290 sundancer
    Twin 5.7 b3’s
    I have a kohler 5e and from memory requires a 3/4 socket.
    Additionally, consider going with a spark plug 1 step hotter for better performance.
    I believe the spec calls for NGK BMR6A and I use BMR5A gapped to .025. Also stay with NGK if possible because they seem to last longer and perform better. Change every 50 hours at least.
     
  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    If by "can't get the right socket on them" you mean that you know the correct size but the area is too tight to get the socket onto the plug... grind the socket wall thinner.
     
  7. rrascher

    rrascher New Member

    18
    Apr 2, 2007
    Sandy Springs, GA
    2002 380 Sundancer
    8.1S
    I got the plugs changed. The socket size is 13/16 thin wall with a a wobble extension.
    The plugs were shot and wasn’t firing on 3 cylinders. New plugs and it ran smooth but there’s gas in the oil so that’s getting changed.
     
    Chris-380 likes this.
  8. Chris-380

    Chris-380 Well-Known Member

    Jan 20, 2019
    Pontoon Beach IL
    2000 380 Sundancer
    7.4L Horizon w/V drives
    With gas in the oil, you going to rebuilt the carb?

     
  9. SeadawgVB

    SeadawgVB Active Member

    405
    Jul 8, 2013
    Tidewater Virginia
    2004 480DB
    QSM11
    He is showing 8.1 motors in his signature, they are injected.
     
  10. Chris-380

    Chris-380 Well-Known Member

    Jan 20, 2019
    Pontoon Beach IL
    2000 380 Sundancer
    7.4L Horizon w/V drives
    This thread is for a Kohler generator though
     

Share This Page

Show Sidebar