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I need your Help!! Fuel tank removal related. (pic)

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Boss, May 11, 2001.

  1. Boss

    Boss 1/2 ton status Author

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    It's Friday night and I should be out at the bar chilling with the fellas, but instead, I'm feeling down and out.
    Today, I was removing the Gas tank from the 89' K5 to do a bunch of mods to. Well, removing this tank was a lot harder than removing older tanks (ie 75' K5). On the new ones, the sending units has 2 flared lines with O-ring fitting adapters, that screw into (what looks like is) Braided steel lines.
    the other line on the sending unit is not flared, and has a hose that goes on it and clamped. (just like the older model units).

    Here are the three lines on the sending unit (you can see the two steel braided lines and the one with the hose is all the way on the left.
    [​IMG]

    Here's the pic of the rubber hose I'm talking about that the older K5's use on their tanks.
    [​IMG]

    And here is what happened. As I was removing one of the fittings on one of the lines, the line was so rusted, it twisted with the fitting and tore off.
    [​IMG]
    [​IMG]

    Now, my question is, what are my options???
    I'm thinking, one of them could be that I cut that torn line with a pipe cutter and cut the steel braided line off the other end and attatch a hose with a clamp, just like the other one. Do you guys see any problems in doing that??
    Second, i'm thinking, I might have to get a new sending unit. But if I recall correctly, these things are damn pricey!!! Am I right? I think they were like $150 to $250, somewhere around there right? If so, that's wayyy too much just for one line. b/c the current unit works fine.
    Anyhow, thanks for your help in advanced.

    <A target="_blank" HREF=http://www.boss.coloradok5.com>http://www.boss.coloradok5.com</A>
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Hey Boss

    I honestly would replace that unit...most likely those lines are braided stainless and threaded like that because of the line pressure. Do you really want to take a chance with fuel lines?

    The rubber line is probably just the evaporative vapor return.

    Look how much corrosion there is on the whole unit, I would think future line failure is not too far away. Probably what you already knew anyways.

    Rene

    [​IMG]<A target="_blank" HREF=http://jules.coloradok5.com>http://jules.coloradok5.com</A>
     
  3. Boss

    Boss 1/2 ton status Author

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    Thanks Rene,
    Yeah, that's what I thought. Just didn't want to spend all that dough. I'm really pissed. Anyhow, thanks for your input. If you're still around, go to the chat room :) I'm in for the night :(
    Boss

    <A target="_blank" HREF=http://www.boss.coloradok5.com>http://www.boss.coloradok5.com</A>
     
  4. MudFrog

    MudFrog 1/2 ton status

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    Dude boss... that really really sux!!!

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  5. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    It is spendy - but you wouldn't want to drop the tank very often, would you. Invest in peace of mind. (and put in the 31 gallon tank while you are there :) )
     
  6. timebomb1602

    timebomb1602 1/2 ton status

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    Would'nt a 89 already have a 31 gallon tank? I have a 91 and it came with a 31 gallon tank.

    <font color=red>1991 GMC Jimmy 350tbi 3.42</font color=red>[​IMG]
     
  7. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    my 91 has the 26 - bummer.
     
  8. MudFrog

    MudFrog 1/2 ton status

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    89 came standard with 26... I think it was an option to get the 31 gallon tank.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  9. GONZO

    GONZO Registered Member

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    whaT SIZE TANK DID THE 88'S GET?
    i have yet to get more than 25 gal pumped in to the tank on my 88. even with the needle resting on empty. i don't want to run it out of gas to find out for sure.
    my 85 has taken 32 gal quite a few times though. i'm guessing the filler neck is holding the extra gallon?

    <font color=blue>85 k5 Blazer 4x4
    99 Trans am 30th anniversary
    79 Trans am [​IMG]
     
  10. backlash

    backlash 1/2 ton status

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    Yeah Boss, gotta agree with Rene, that whole deal is a time bomb! Keep that sender though ... bet you could figure a way to use it as a backup if the the replacement ever died.
     
  11. backlash

    backlash 1/2 ton status

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    When I ordered mine ... an 88 the option were to get the standard or the 26(?) gal. I ordered the option thinking that was larger ...damn sales manager!

    I was told later that the larger 31 was standard. Not sure if this is correct
     
  12. shane

    shane 1/2 ton status

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    I hope that the 31 is an option, it would mean that my truck has at least one option!! Sweet!, I got a loaded truck now [​IMG]

    Also, if there is that much rust on the outside and the steel is weaken to the point of breaking like that there is a possibility that under pressure from the fuel pump it could blow out. Also you`ll be getting all kind of crap into your filter.


    Just keepin it Canadian[​IMG]
     
  13. Gandolf

    Gandolf 1/2 ton status

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    I have a couple of ideas. First, you might check the yellow pages for a gas tank repair shop. They may have a technique for repairing this that we aren't aware of. I'm sure you're not the first person this has happened to. Second, if you confirm that the new sending unit is very expensive, it may be much cheaper to get a used tank with a sender, in good condition, at a wrecking yard.
    Good Luck

    '89 K5 Silverado..."You can’t have a real adventure, unless the outcome is truly uncertain".
     

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