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  1. msballin

    Looking for assist with locating raw water exhaust jacket drain plugs on my 454 MAG MPI Horizon

    I've tried searching many forums for this information, so my apologies if this is info is already posted. I'd like to drain the raw water from my exhaust until I have a chance to run the pink through the system. Thanks in advance as always. Best, Michael
  2. msballin

    IAC Valve Replacement - 2000 7.4 MAG MPI Horizon

    Meaning none? Or is that the name of a product. Sorry, I live in a literal world. Measure twice..cut once. Thx
  3. msballin

    IAC Valve Replacement - 2000 7.4 MAG MPI Horizon

    Any gasket adhesive or similar when reinstalling throttle body? Thx
  4. msballin

    IAC Valve Replacement - 2000 7.4 MAG MPI Horizon

    All set..and thank you. Thank you. Next question. When reinstalling the throttle body, does the gasket get installed as is or with some type of liquid gasket or similar? Thank you
  5. msballin

    IAC Valve Replacement - 2000 7.4 MAG MPI Horizon

    Thanks very much. Have a great day!
  6. msballin

    IAC Valve Replacement - 2000 7.4 MAG MPI Horizon

    That's an answer I was looking for. Might you have some advice on how to remove the exhaust tube from the elbow? I've used a pick tool to break the seal but could use some input on this if you have. Thanks much. Greatly appreciated
  7. msballin

    IAC Valve Replacement - 2000 7.4 MAG MPI Horizon

    Good morning - When replacing the IAC on my 2000 starboard engine, if removing the plenum to get to the throttle body, is it necessart to remove the riser/elbow and exhaust tube? I've been getting some mixed advice on this. It seems if the plenum is removed, the riser and exhaust tube are no...
  8. msballin

    Stumped re: ECM/fuel injectors

    Makes sense. As an FYI, all injectors were replaced with new and or ultrasonically cleaned ones while both engines underwent install of new OEM Merc head/valve assemblies, distributor assemblies, and full tune ups. Was not expecting this issue to reappear which was present prior to the rebuilds...
  9. msballin

    Stumped re: ECM/fuel injectors

    The frustrating part of this is originally, the port engine was looked at by marina mechanic (no personal mechainics permitted on premises) for a different issue when upon initial look/see he observed a broken #7 injector which was suggested to be replaced. Upon replacement #5 was broken (I've...
  10. msballin

    Mercruiser 7.4l Horizons ECM

    Dealing w this currently. I've been told they're the only reputable one in the country. https://obd2allinone.com/ecmrepair.asp
  11. msballin

    Stumped re: ECM/fuel injectors

    Awaiting return of unit. However, I do concur and will purchase new. It's a $1700 gamble I'm willing to take.
  12. msballin

    Stumped re: ECM/fuel injectors

    Good afternoon - Subsequent to injectors being replaced w new, port engine presents with rough/vibration from idle to 2200 rpms then she's running like a top after engaging throttle to 34- 3600 rpms. Mechanic states system scan shows ECM is flooding one bank of injectors (3,5,2,8) with fuel as...
  13. msballin

    Clarion upgrade

    This looks great! Not at the boat now but assuming you're splicing the 12v wires to? thx
  14. msballin

    Clarion upgrade

    Need to check to see if my present model has aux jacks. This could save some bucks. How did you connect to 12V? Thanks
  15. msballin

    Clarion upgrade

    Thanks for this. Nice work. I believe my model is M5470 but have to check when back at the boat.
  16. msballin

    Clarion upgrade

    Good afternoon - I'll first apologize if this request is one that has already been posted. Did a search and couldn't find with specificity. That said, first, does anyone know the model number for the clarion system on the 2000 340 DA. It has the 6 disc changer networked. If so, has anyone any...
  17. msballin

    Winterize engines

    Thank you for this. Never considered as weather in early November is usually not like this. But....will most likely grab one. Peace of mind .. valuable!
  18. msballin

    Winterize engines

    I've the last year of the 7.4's and not familiar w any air bleed system. Hmmm... But, pink going through today and I concur w fresh water systems on board. They get winterized at the marina before I bring her home. 1st time in 11 years this happened. Good to have alternate plans. Thx. BTW..where...
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