Change your lower cool fuel filter

craigswardmtbcraigswardmtb Mystic, CTPosts: 1,006Member ✭✭✭
I like to think I am all over maintenance  and that's why I tend to run well most summers, but today proved sometimes being lucky helps too. I change my cool fuel filter every year but since I have had the boat I never changed the secondary filter at the bottom of the cool fuel module until today. Below is s picture of what the filter looks like. I'm not sure it's ever been changed. I think I have lucked out that this black mess hasn't dislodged and clogged something. I'm sure it helps the fuel lines are high on the cool fuel module too. If you don't change these or know about them you may want to investigate and change. The pn is 35-892665. 


  • craigswardmtbcraigswardmtb Mystic, CTPosts: 1,006Member ✭✭✭
  • Cableguy GregCableguy Greg Pittsburgh, PAPosts: 3,902Member ✭✭✭✭✭
    Wow!!! You are lucky. When I changed mine 2 years ago, it didn't look anything like that. It was rather clean. 
    2008 280 Express Cruiser, 6.2MPI, B3, Pittsburgh, PA "Blue Ayes"
    Go Steelers!!!
  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 4,582Member ✭✭✭✭✭
    I will guess that is the Cool Fuel II filter?  Unless I am mistaken, which could happen!, I do not think I have a filter in the fuel cooler on my 2003 350MAG MPI?

    2003 342FV "Black Diamond", 350 MAG MPI, 20P 4x4 Props, PC BYC, Holland, MI
  • Liberty44140Liberty44140 Bay Village & Marblehead, OH.Posts: 2,306Member ✭✭✭✭
    My 06 350s have the same configuration and I had the same looking pre filters last spring when i bought the boat. Scary. I assume I can get 2 summers out of the new. 
    Wine-N-Down -- 2006 342 Express Cruiser

  • craigswardmtbcraigswardmtb Mystic, CTPosts: 1,006Member ✭✭✭
    Yep it's the cool fuel 2 going to my 496s. The upside is no paint peeling as DI has experienced. 
  • Dream_InnDream_Inn Annapolis, MDPosts: 5,250Member, Moderator mod
    where you will see the paint is at the regulator, which is further downstream in the pump.  The paint can come out after the filters, so you may never see it in the filters.  No more paint for me going forward! :)  Merc finally changed their design.

    BD, you correct, you wouldn't have them.

    Dream 'Inn III -- 2008 400 Express

  • TrashmanTrashman New Jersey/ philaPosts: 431Member ✭✭✭
    Im unaware of these filters   I have a 350 mag mpi horizon. my boat is a 2004 but think the engine was mfg in 2003. I did see a large black plastic cover below the exhaust manifold on the port side where fuel lines enter. could you describe where to access the filters? 
  • reneechris14reneechris14 Pawcatuck river CTPosts: 2,009Member ✭✭✭✭
    Thanks @craigswardmtb changed the top when I boat the boat in Sept never knew there was one under that,on my to do list now.I gots me a big list
    2005 Rinker FV342  Pawcatuck river,Ct
  • craigswardmtbcraigswardmtb Mystic, CTPosts: 1,006Member ✭✭✭
    @reneechris14 where are you keeping the boat this year?  Will we see you out at Napatree this season?
  • reneechris14reneechris14 Pawcatuck river CTPosts: 2,009Member ✭✭✭✭
    Yes you will, Stonington on the river,2.9 miles form Napa tree.boy got a lot to do to get both my drives back last week all rebuilt,this week end will do bellows,gimbal,shift cables,and that oil line.after the defender sale,bottom paint,and grill.
    2005 Rinker FV342  Pawcatuck river,Ct
  • craigswardmtbcraigswardmtb Mystic, CTPosts: 1,006Member ✭✭✭
    Nice. We will have to have a cold one at some point.  We plan to be at Napatree Easter weekend under anchor. My list is getting shorter but still have a lot to do as well. Painting the drives and bottom is next weekend's project. 
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