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what to flush gas tank with?

Discussion in 'The Hokey Ass Message Board' started by GARY T., Jun 17, 2010.

  1. GARY T.
    Joined: Mar 23, 2008
    Posts: 1,985

    GARY T.
    Member
    from S.W. Pa

    Have to change gas tank on wifes car--bought a used one --good shape , but looks like a little varnished gas and maybe some dust in it.Should I just swish some gas around in it and drain it ,or is there something better to do?
    thanks
     
  2. JohnEvans
    Joined: Apr 13, 2008
    Posts: 4,883

    JohnEvans
    Member
    from Phoenix AZ

    Denatured alcohol works good at getting the varnish out.
     
  3. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,993

    rottenleonard
    Member

    I've cleaned out motorcycle tanks with laquer thinner worked well on varnish but won't touch rust.
    Robert
     
  4. lorodz
    Joined: Jul 26, 2009
    Posts: 3,727

    lorodz
    Member

    my sound funny but i used some gas let it sit for a couple days and than flushed it out with water and all the varnish came out with it ..
     

  5. Von Rigg Fink
    Joined: Jun 11, 2007
    Posts: 13,418

    Von Rigg Fink
    Member
    from Garage

    if the varnish is thick ..while using a solvent..throw some small nuts or bolts that will come back out easy to help loosen up the scum..put them in and shake it up while its sealed off with some tape.
     
  6. Tech @ BG
    Joined: Nov 18, 2005
    Posts: 319

    Tech @ BG
    Member

    Years ago I used to carry them to the radiator shop and have them vatted but not sure if they still do that or not.

    One thing to keep in mind if it is a pump gas application is that with the 10% ethanol in the fuel now it is acting like a detergent and cleaning any deposits in the older tanks and sending them upstream so make sure and get everything you can out. Filters will not stop a lot of this stuff either as it is showing up as a sticky residue at the carbs.
     
  7. chaddilac
    Joined: Mar 21, 2006
    Posts: 14,021

    chaddilac
    Member

    Throw a small chain in there and slosh it around!!
     
  8. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,263

    gimpyshotrods
    ALLIANCE MEMBER

    All of the ones I work on go to the local radiator shop to get boiled out. It makes welding, sealing and lining a snap (and not a BOOM!).
     
  9. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950

    moefuzz
    Member

     
  10. R Frederick
    Joined: Mar 30, 2009
    Posts: 2,658

    R Frederick
    Member
    from illinois

    I bought a gallon of paint stripper for my last tank, it cut ALL the brown varnish nicely. I then pressure sprayed it out.
     
  11. big creep
    Joined: Feb 5, 2008
    Posts: 2,945

    big creep
    Member

    x2 here they still do that,this is your best bet if you can get it done. pretty cheap too.
     
  12. Acetone is the main ingredient in Absorbine Jr. muscle linament. Safe to rub on your aching muscles!
     
  13. 49ratfink
    Joined: Feb 8, 2004
    Posts: 18,828

    49ratfink
    Member
    from California

    seems like when I did my motorcycle I used kerosene.
     
  14. 40hemicpe
    Joined: May 12, 2007
    Posts: 976

    40hemicpe
    Member
    from anaheim.ca

    for my cars&bikes i use diesel soak it for a little then put a chain in there and slosh it around
     

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