Official 2003.5-2008 340 Sundancer Thread

Discussion in 'Sport Cruisers' started by Zorba, May 17, 2013.

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  1. villain style

    villain style Well-Known Member SILVER Sponsor

    Oct 10, 2006
    Mears Point Marina Kent Island, MD
    2006 44 DA
    QSC 8.3s
    Cummins QSC 8.3s 500HO
    KevinC - My Raymarine C80 won't power on. I am trying to locate where it gets its 12V supply from. Did you remove yours yet and can tell me where that 12V supply cable connects in our boats? I see the cable on the back of the unit, now just need to understand where it gets its 12V feed connection.
    Thanks..
     
  2. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    I have a Raymarine Pathfinder RL70 and not the C80 and I have not removed it yet but will more than likely be involved with some aspect of that this weekend (wrap is still not off because of the weather on Long Island). I am pretty sure they would pull their power source from the same place so I will let you know what I find.

    -Kevin
     
  3. villain style

    villain style Well-Known Member SILVER Sponsor

    Oct 10, 2006
    Mears Point Marina Kent Island, MD
    2006 44 DA
    QSC 8.3s
    Cummins QSC 8.3s 500HO
    Ok Thanks..
     
  4. Spencer Wampole

    Spencer Wampole New Member

    1
    Mar 29, 2018
    2006 Sea ray 340
    Mercury 8.1 Horizon
    Bankyf- are you able to send me a direct message so I can reach out to you to get some pointed advice on removing the headliner on my 2006 sea ray 340? I’m having the same serious internal water leak coming from the loose rails of the sunpad above the galley.
     
  5. Michael Cooley

    Michael Cooley New Member

    12
    Oct 22, 2017
    2006 340 Sundancer
    8.1 Horizon
    Hello All.
    I have an issue recently and I am not sure if this is the place to post, but here it is.
    2006 340 with twin Inboard 8.1 horizons.
    While running at about 24 to 27 mph I lose power in both engines. This happens typically about an hour or two of running regardless of how long I have been on plane (combination idle speed then on plane then back to idle). Both RPM gauges fall like I turned off the engines and within a second or so I hear the ignition beep and power is returned. No rough running of any kind before or after. It usually takes another two to three hours to happen again. This has happened in relatively calm seas, and does not happen in rough seas thus far. It has happened only one time continuously (only 1 to two minutes between repeating) after running for 5 hours. Then again after 3 or 4 instances did not happen again for the rest of the day (3 additional hours). The following day it did not happen at all 6 hours of continuous running. So far it has happened with full, three quarter and half a tank of gas. I have not gone below just under half a tank of fuel. I have never had to restart the engines and never had to reduce power or have rough engine. No black smoke or other issues. Also I went to change the fuel/water separators and cannot find them. Does this model have the Racor filters or just the small secondary filters?
    Any assistance would be helpful.
     
  6. liv2ryde100

    liv2ryde100 Member

    329
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    I started having an intermittent issue last year also, when i was getting ready to strt the boat, flip the ignition switch on the dash, hear the beep and watch the gauges cycle, then push the switch all the way down to start. One engine this worked perfectly for, and the other it wouldn’t. I would push the switch, no beep, no gages moving. A couple seconds would go by and finally the beep would come. One time I think I had to tune it back off and then back on to get the beep and gauges cycle. Any thoughts?
     
  7. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    I see you posted this issue in multiple threads - to get the best responses it better to to keep it in one place. That way people offering help will be able to track all the previous options offered.

    As far as the cut out - as others on the other post mentioned it sounds electrical - maybe a common ground - and you can probably read the fault code off the engine if you have vessel view or get a tech, friend or dockmate that has a reader. I picked up one just for this reason.

    As far as the fuel filters... you most likely have the Cool Fuel Gen 3 (CF3) on your boat and not the spin on type. the CF3 module would be located to the front of the engine (back of the boat with v-drives) on the lower port side. Follow the fuel lines from the tank and you will find where they are.

    -Kevin
     
  8. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    I would check the simple things like the neutral cutoff switch. I had that a couple of times when trying to start - one engine good - the other no good. Checked the shifters and someone must have pushed one slightly out of neutral. Now I start with that before ignition.

    -Kevin
     
  9. Dano135

    Dano135 New Member

    3
    May 10, 2017
    Ft Myers Fl
    06 34 SeaRay Sundancer
    Twin 8.1 Mercruisers
    Hello Micheal. Sounds like you and I have the same issue see post #1246. I was out today and boat ran well for nearly 2 hrs before hearing the ignition beep and watching port tac fall to 0. Within a second or 2 power returns and like you,haven’t needed to restart the engine. It happened at various speeds and it’s very frustrating. Opened the dash and checked all connections. Tomorrow going in bilge and will check all grounds as well as opening electric panel in cabin and check all its connections. My mechanic found no faults on his computer and seems stumped. I’ll write if I find a cure.
     
  10. liv2ryde100

    liv2ryde100 Member

    329
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    im Interested to know if either one of you have checked the fuel pressure, maybe u are experiencing some kind of high pressure situation after awhile of running from the gen III cool fuel module paint problems
     
  11. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    Sorry but another 6" of snow today has delayed me again. Got the wrap off finally but did not leave enough time to start digging into the electronics. Soon Spring will arrive.

    -Kevin
     
  12. Korkie

    Korkie Member

    193
    Feb 2, 2016
    Leonardtown, MD Potomac River / Chesapeake Bay
    340 Sundancer 2006, Garmin 7612, xHD Radome
    Merc 496 Mags, Bravo III Drives
    Sounds like a trend with the 06 340s. I too am having the same problem. Very intermittent and actually had it on the computer when it happened and nothing came up. I have cleaned all of the grounds on both engines, checked the neutral switch on the affected (port)m engine and am finding nothing. Removed fuel injectors last season and had cleaned and removed gen III system and cleaned as well. Same problem, no changes. I agree it must be electrical of some sort. One of those phantom problems that will be chased until found. Once found, will most likely be something simple. Will keep eye on this thread and post any new attempts at figuring it out.
     
  13. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    I dug into the helm today and mine seems to get its power from a "BlueSeas" breaker box mounted to the starboard side of the access panel beneath the steering wheel. Not sure if the box was original or added by the previous owner. Glad I got to take a look as I found lots of stuff that needs to be cleaned up when I upgrade my electronics.

    -Kevin
     
    villain style likes this.
  14. melida

    melida Member

    849
    Apr 1, 2009
    Istanbul-TURKEY
    Sea Ray 2007 375 DA
    Sea Ray 2005 315 DA Sold
    2xYANMAR 6LPA-STP 315 HP V-drives, 4kw Onan gen, radar, gps, autopilot, bow&stern thrusters, sat tv
    Mark, have you checked the blade fuse red (10A IIRC) at the "BlueSeas" breaker box as @KevinC mentioned.

    When you check it you'll see an other fuse which is for the Northstar vhf at least mine is there and I check it sometimes.
     
    villain style likes this.
  15. liv2ryde100

    liv2ryde100 Member

    329
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    I think I’m goin to attempt to replace my manifolds and exhaust elbows. 1750$ is the labor I would be saving
     
  16. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    Should not be too hard. Just a bunch of bolts. Hit everything with a little pblaster the day before. Cut down a couple of bolts to studs that can be hand threaded in and you can slide the manifolds in using them to align and just unscrew when the real bolts are in. Tricky part is the size. To long and you will not clear the opposite engine. Too short you will not be able to unscrew.

    -Kevin
     
    Last edited: Apr 11, 2018
  17. liv2ryde100

    liv2ryde100 Member

    329
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    Kevin thanks for the advice, hopefully the job won’t be too hard, seems to be the theme, pb blaster, cut heads off of bolts, sounds like a plan, hopefully I can pull it off.
     
  18. liv2ryde100

    liv2ryde100 Member

    329
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    Anyone know a part number, or where to order the gas shocks for the cabinets on either side of the front berth?
     
  19. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    On my to do list also. My boat does not have them and I am tired getting hit in the head fumbling for something. If you find them let me know. There are some cheap gas shocks available on eBay but I have not had time to measure.

    -Kevin
     
  20. liv2ryde100

    liv2ryde100 Member

    329
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    Ok I have them in there, they just aren’t not working so I’ll check for a part number incouple weeks when I open it up
     

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