Corrosion around gas tank

Discussion in 'Boating' started by JPritch, Oct 29, 2009.

  1. JPritch

    JPritch New Member

    Messages:
    1,852
    State:
    Lynchburg, VA
    So I finally got to my built-in gas tank (had to remove my center console to get to the hatch). I intend to drain the tank and give it a good cleaning. I noticed that there is a corrosive looking white cake-up around two of the tube fittings going in/out of the tank. I wish I had a pic, but it looks just like the stuff you'll see on old battery terminals, just alot more of it.

    What is this and is this indicative of a greater problem? I've had a lot of fuel issues in the past with my boat, and wanted to service my entire fuel system before I hit the river this winter, starting with the tank itself.

    Thanks for everyone's help.
     
  2. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    That is galvanic corrosion, I think I spelled it right. Some thing is getting its ground from the hull of the boat and that ain't good, Everything on a boat that uses power must be grounded back through the battery.
     

  3. Mark J

    Mark J New Member

    Messages:
    9,407
    State:
    Four Oaks, NC
    Could be a water/moisture issue too.
    There is alot of good reading on fuel tanks on this site.

    http://www.yachtsurvey.com/

    He is one of the best most thorough marine surveyors in the business.
    Well known in those circles.
    Tons of good information and myth busting on his site.