Corrosion around gas tank

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

  1. JPritch

    JPritch New Member

    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

    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

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

    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.