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CLEANING THE GAS TANK

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by JERRY-DEE, Oct 4, 2001.

  1. JERRY-DEE

    JERRY-DEE Registered Member

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    I have changed my fuel filter 5 times in 10 months. Last time I took my truck to the shop they told me it was clogged again (that would explain why it's running like sh*t).They also told me the gas tank probably needed to be flushed. Since the labor at a shop will be about $200 to take it out and another $100 to flush it. I am wondering if it woukd be better to look for a new tank. Or is ther an easier way to do this myself?
    Thanks Jerrid
     
  2. Cmoe

    Cmoe 1/2 ton status

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    It's not that hard....They did it on TRUCKS not to long ago for the Hairy Hauler..... Just run all the gas out of the tank.... I would call some Radiator shops and see if they will put it in their boil tank overnight to clean it all up.....then buy a sealer to seal the tank.....

    C'moe

    Kill Roy was here!
     
  3. HarryH3

    HarryH3 1 ton status Author

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    Might be a great time to upgrade to a bigger tank. [​IMG] Check out these guys:
    <a target="_blank" href=http://www.aerotanks.com>www.aerotanks.com</a> I put their 45 gallon tank into a '72 Blazer many years ago. It was a nice unit and made the time between fillups really stretch! Of course, ya gotta save your pennies between fillups, cause when you finally do empty the tank it costs a bundle to refill it! [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <a target="_blank" href=http://www.angelfire.com/super/ThunderTruck>www.angelfire.com/super/ThunderTruck</a>
    It's a great day to be alive...
     
  4. kumma

    kumma 1/2 ton status

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    I bought a new one becasue mine had a hole in it. if your gonna go thru the effort to drop the tank you might as well replace it cause new one was only 140 bucks. and check out the condition of the lines and sending unit.

    "Why is there a <font color=red>watermelon</font color=red> here?"
     
  5. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    Someone posted this yesterday.....<a target="_blank" href=http://coloradok5.com/forums/showflat.php?Cat=&amp;Board=blazer4x4&amp;Number=236548&amp;page=0&amp;view=collapsed&amp;sb=5&amp;o=0&amp;part=1#Post236901>have you ever put rubbing alcohol in you gas</a>.....Maybe it'd be worth trying out just to see what it'll do... I'm gonna try it myself and then change the filter to see if it'll be gunked up as bad after a week as it was before hand... might work! For like $3 bucks I think it'd be worth a shot....

    <a target="_blank" href=http://www.chevycagal.homestead.com/steph.html>Steph's Webpage</a>
    Suck Fumes Ford Boy
    &lt;&gt;&lt; PSALMS 23 &gt;&lt;&gt;
     
  6. taterblazer

    taterblazer 1/2 ton status

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    Alchohol is great for most things, like beer! But it won't help with rust and sediment in your tank. Flushing it or getting a new one is probably best or just keep changing filters.
     
  7. Rob 85K5

    Rob 85K5 1/2 ton status GMOTM Winner

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    Here is what they used on Trucks.
    <a target="_blank" href=http://www.eastwoodco.com/cgi-bin/sgin0101.exe>http://www.eastwoodco.com/cgi-bin/sgin0101.exe</a>


    Rob 85K5

    <font color=orange>Bleedin' Chevy Orange</font color=orange>
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    The "sock" (prefilter) in your tank may have broken apart and could be where all the garbage is coming from. I'd pull the tank (have to anyway if your thinking of changing it) and pop the sending unit off, and check inside. I've never seen a GM tank rust from the inside out (galvanized since at least '67) so if you pull the sender, and you can see crud in there, but no rust, just siphon out the gas/garbage with a hose, and repeat until its gone. if the outside is pretty rusty, (as in pitted, not surface rust) I wouldn't mess with it, and just replace.

    You can replace the "sock" by itself.

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     

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