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  1. #11

    Re: Racor checkball removal ?

    Once the water was removed and fuel filtered for days, I felt my tank was finally clear of these issues. Went on vacation to the Dry Tortuga's.
    The weather sucked for that 3 weeks. Rain near every day. Water came back in my Racors.
    No Valve Tech fuel or fuel treatments this time.

    When we returned home, I went straight for the fuel cooler,, again,, NOT.

    One night, sitting in the ER pondering my hair loss, I looked up and saw a rusted out hose clamp that had slid down my stb fuel fill hose,,, to that tank..

    And then I found IT.

    The caulk had long failed under the deck fuel fill. Any water on the deck went under the fuel fill and would follow the hose down till it dripped off of the hose.
    This would be wash water, sea water, rain water..
    The hose clamps rusted and failed long ago. The top end of the hose had been getting wet with water for so long that the wire in the hose had rusted out. The hose end swelled out like a funnel. Now when water leaked under the deck fill, the water would drip into this funnel shaped hose end and into my tank.

    Re-bedded the deck plate, new fuel fill hose, pump the water out one last time, problem has been gone now 9 years.

    Sorry I bored everybody, But if llldks goo looks like my goo, I felt my whole story needed to be explained.

    Water can find its way to get into your fuel tank on the strangest path.

    I found my original slime was from my water issue reacting with Valve Tech fuel additives.
    Convinced I had bad fuel with a bio issue, I poured in the diesel clean. This seemed to make my issue worse.

    I have learned the hard way;
    Bio Poo is dark, water snot is brown.
    Snake oils can make some issues worse.
    Last edited by Captain Ralph; 06-27-2022 at 05:56 AM.

  2. Re: Racor checkball removal ?

    Captain Ralph you noted that diesel clean helped contribute to the problem in addition to water intrusion

    This is the result of water and lots of diesel clean. Not from bio poo.
    This will not go away till your water intrusion is fixed.
    I was considering using a Cetane Boost (Diesel Kleen). Would you advise against using Diesel Kleen. I'm not having any problems; I was considering for preventative maintenance.
    SCUSI
    1981 55C
    Hull #: 328

  3. #13

    Re: Racor checkball removal ?

    Quote Originally Posted by cenger View Post
    Captain Ralph you noted that diesel clean helped contribute to the problem in addition to water intrusion



    I was considering using a Cetane Boost (Diesel Kleen). Would you advise against using Diesel Kleen. I'm not having any problems; I was considering for preventative maintenance.
    If your fuel is clean and clear, use if if you need it.
    Centan boost is real good for old fuel. IMO, if you have fresh fuel, it's not going to do a thing for you.

    Unlike your car that relies on knock sensors to keep the timing just under that knock, then adding octane does let the ECM advance the timing a bit more until that first knock.
    Your ole diesel engine is not going to change it's timing.

    The best PM you can do for your fuel system, clean fuel, fresh fuel, clean tanks, clean filters.

    My mistake was mis-identifying the snot and assumed bio poo of some kind. It was water reacting with the Valve Tech additives. When I added the Diesel Clean, it tried to suspend more water in the fuel and formed a snot line between the water and fuel. It was that snot you can see in the pictures.
    Last edited by Captain Ralph; 06-27-2022 at 05:52 PM.

  4. Re: Racor checkball removal ?

    Very helpful Captain. I have fresh fuel so I think I'll save the Diesel Kleen for winter.
    SCUSI
    1981 55C
    Hull #: 328

  5. #15

    Re: Racor checkball removal ?

    Quote Originally Posted by cenger View Post
    Very helpful Captain. I have fresh fuel so I think I'll save the Diesel Kleen for winter.
    I did not mean to, but I think I may have hy-jacked this thread.

    I see your in Essex. Do you operate during the winter? Do you purchase winter fuel like big trucks?

    Is there Valve Tech fuel retail pumps you use in your area? Do they change their formula during the winter?

    We operate year round and I've never been sure of how the fuels up there changes for boats during the cold.

  6. #16

    Re: Racor checkball removal ?

    Will check for water entry as suggested but retrospectively, I'm thinking this wasn't a problem until I switched to Valve Tech.

    Will switch away from Valve Tech.

    Thanks.

  7. #17

    Re: Racor checkball removal ?

    Quote Originally Posted by llldks View Post
    Will check for water entry as suggested but retrospectively, I'm thinking this wasn't a problem until I switched to Valve Tech.

    Will switch away from Valve Tech.

    Thanks.
    It is good stuff, it is reacting with something else in the tank other than fuel, Just like it started with me.
    I originally thought it was a bad load of fuel.

  8. #18

    Re: Racor checkball removal ?

    .....
    Last edited by Play'N Hooky Too; 06-28-2022 at 03:55 PM. Reason: Posted un-informed and misleading opinion on function of ball check-valve.
    "The only thing that always works on an old boat is the owner" - Some Wise Guy

    1976 46' Convertible
    Bayou Chico
    Pensacola, Florida

  9. #19

    Re: Racor checkball removal ?

    My impression of the schematic is that suction moves the checkball down allowing fuel flow into lower glass chamber/centrifuge. Without suction, the ball floats up into seal preventing retroflow back to tank. Not sure about the ball not floating in diesel. It appears the checkball is only on the inflow side of the filter.
    Attached Images

  10. #20

    Re: Racor checkball removal ?

    It would appear that you are correct. I should have looked at my manual before posting. Sorry.
    "The only thing that always works on an old boat is the owner" - Some Wise Guy

    1976 46' Convertible
    Bayou Chico
    Pensacola, Florida

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