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Technical What do you do concerning the gas tank ?

Discussion in 'The Hokey Ass Message Board' started by exterminator, Dec 26, 2018.

  1. exterminator
    Joined: Apr 21, 2006
    Posts: 1,426

    exterminator
    Member

    I have been driving my 40 ford pickup (45 cab) since the mid 90's. The truck has ran great until recently when tried to run up a 45 degree platform and started running lousy. I think something in the tank got in to the gas (rust?) or something and need to do something. Can you buy a new replacement exact tank for a 45 cab or do I do the bolt and nut cleaning, flush out the line or? Also I can't install a tank in the back of the frame because of the trailer hitch.I do use my truck as a truck so in the bed would limit my hauling. What would you do?
     
  2. flatford39
    Joined: Dec 3, 2006
    Posts: 2,409

    flatford39
    Member

    Have any real radiator shops in your area??? If you do drop it and take it to them to get cleaned out and repaired. I am fortunate I have a really good one within 15 miles of my shop.
     
    lurker mick likes this.
  3. mgtstumpy
    Joined: Jul 20, 2006
    Posts: 7,772

    mgtstumpy
    Member

    Not knowing you set up all I can suggest is drain and remove the gas tank, wash it out and flush the gas lines.
    In my 35 Chevy I run the OEM gas tank with external electric pump. I had a sump for the pick up installed so there was always gas available however when low and I go around a corner, it coughs a bit. With hindsight I should have made it deeper with a larger sump and baffles.
    With my 46 Olds I again used the OEM gas tank but added an in-tank pump with sump and some fuel cell foam. I still need to add some baffles.
     
  4. 49ratfink
    Joined: Feb 8, 2004
    Posts: 17,548

    49ratfink
    Member
    from California

    probably the first thing would be to have a look at the fuel filter. how do you even know it is the tank?
     
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  5. After trying to clean out 3 old gas tanks, now I replace them with new if available. I had a radiator shop clean out one years ago that took two tries to get it clean. I went back a few years later and they told me the EPA won't let them clean them out like before and he couldn't get it clean if it was too rusty or had that crappy gas tank sealer in it. So now I avoid the work and hassle and just replace them if I can. Last car, I had to replace the tank. all lines, fuel pump and rebuild carb because the old gas was so gummy
     
  6. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,773

    scrap metal 48
    Member

    I agree ^^^.. Buy new....
     
    zzford likes this.
  7. 48ford
    Joined: Dec 15, 2001
    Posts: 421

    48ford
    Member

    I sent mine to “tank Renewal “ back in 2001 they cleaned and sealed it.
    It’s still holding up
     
    kidcampbell71 likes this.
  8. gene-koning
    Joined: Oct 28, 2016
    Posts: 1,591

    gene-koning
    Member

    My luck with trying to clean old tanks has not worked out so well for me in the past. These days I won't even mess with them. I just buy a new tank. If one is not available for your ride, have one made (I'd find it hard to believe you couldn't buy a tank for any Ford). Gene
     
    49ratfink likes this.
  9. Hot Rods Ta Hell
    Joined: Apr 20, 2008
    Posts: 3,976

    Hot Rods Ta Hell
    Member

    I agree with 49, in that it may not be the tank. You may swap the tank and still have an issue.
    "Divide and conquer" troubleshooting. Do the easy stuff first.

    If it's an under hood filter, disco the fuel line aft of the fuel filter and gravity feed a gallon gas can to see if the engine runs from the can through the filter. If it doesn't, bypass the filter to see if that was it or there's junk in the float bowl, etc.
     
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  10. sunbeam
    Joined: Oct 22, 2010
    Posts: 4,545

    sunbeam
    Member

    You could plum in a bulk tank filter most filter co. offer one
     
  11. 41rodderz
    Joined: Sep 27, 2010
    Posts: 3,591

    41rodderz
    Member
    from Oregon

    Maybe hard to buy a new tank being a'40 with a '45 cab.:D
     
  12. gimpyshotrods
    Joined: May 20, 2009
    Posts: 16,581

    gimpyshotrods
    Member

    Replace, retrofit from an other make/model, or make a new one.
     
  13. clem
    Joined: Dec 20, 2006
    Posts: 2,676

    clem
    Member

    Be a hot rodder and clean it out , start by disconnecting fuel line and blowing compressed air backwards through it.
    Take tank out and rinse etc.

    (Any chance of pics of trying to run up 45 degree slope ? )

    .
     
    curbspeed likes this.
  14. 19Fordy
    Joined: May 17, 2003
    Posts: 6,597

    19Fordy
    Member

    Wouldn't running up a long 45 degree platform make it extremely difficult for the gas in the tank to
    flow forward, even with baffles,especially if it's gravity feed system?
     
    Beanscoot likes this.
  15. I believe the tank may be available, I was helping someone find one for a '42 Ford truck. Old tanks, I'd run a big old Holley canister filter just after the tank. They take the old Ford fuel pump filters, plumb a valve into the line and you can drop the canister quickly and see what is in it. With my '59 Ford, a new tank was $160 and well worth it.
     
  16. exterminator
    Joined: Apr 21, 2006
    Posts: 1,426

    exterminator
    Member

    No pics
     
  17. Frankie47
    Joined: Dec 20, 2008
    Posts: 1,728

    Frankie47
    Member
    from omaha ne.

    What is a bulk tank filter? Please and thank you. :)
     
  18. sunbeam
    Joined: Oct 22, 2010
    Posts: 4,545

    sunbeam
    Member

    It is a large filter mostly used by farmers on bulk fuel tanks you would have to use bushings to adapt would catch a lot of rust and dirt http://www.wixfilters.com/Speciality/FuelDispensing.aspx I might add my helper left the cap off my Combine 2 years ago lots of chaff and dirt got in the tank and pluged the electric pump cleaned the pump and it did it again. I had an extra bulk tank filter plumbed it in and no more trouble.
     
    Last edited: Dec 27, 2018
    Frankie47 likes this.
  19. I'd like to see that too. Must be a rock crawler. 45degrees is extreme to say the least. A 6% grade is probably more like it. Boil it out and get an Eastwood gas tank kit. It worked for me.
     
  20. Frankie47
    Joined: Dec 20, 2008
    Posts: 1,728

    Frankie47
    Member
    from omaha ne.

    You are attempting a hill climb?
    [​IMG]
    Thank you for the bulk filter lesson Sunbeam.
     
    gimpyshotrods likes this.
  21. On a 45° slant you may have been low on gas and starved the pickup. HRP
     
    gimpyshotrods likes this.
  22. gimpyshotrods
    Joined: May 20, 2009
    Posts: 16,581

    gimpyshotrods
    Member

    Wherever you are driving, don't.

    I live in San Francisco, home of some of the steepest streets.

    Here, they top out at about 27% grade, which is about 15°.

    I have to be careful where I park, and with how much fuel, even with the new cars.
     
    49ratfink likes this.
  23. oldwood
    Joined: Mar 13, 2010
    Posts: 899

    oldwood
    Member
    from arkansas

    My experience with gas tank sealer is don't use it. Ethanol will dissolve it. I run non-ethanol in Arkansas but some of you guys are not so lucky.
     
    56don likes this.
  24. Gearhead Graphics
    Joined: Oct 4, 2008
    Posts: 3,273

    Gearhead Graphics
    Member
    from Denver Co

    Pics of said truck? Im mostly interested in what your 40/45 looks like.
    I'd also go for cleaning out the fuel system and making sure its the tank first, then looking for a new tank. Cleaning an old one is a pain in the butt
     
  25. rusty rocket
    Joined: Oct 30, 2011
    Posts: 3,670

    rusty rocket
    Member

    Buy a bag of citric acid and give it a citric acid bath
     
    Last edited: Dec 27, 2018
  26. oldwood
    Joined: Mar 13, 2010
    Posts: 899

    oldwood
    Member
    from arkansas

    Home Depot sell Muriatic Acid for swimming pools for less than $10 for 2 gallons. Just keep your nose out of it or you'll wake up wondering where you are. Slosh(sp) it around and around. You have to wash it out at the car wash. Get it dry quickly and pour about a 1/4 gal of WD-40 in it to keep from flash rusting. Less than $20 and tank should be clean.
     
  27. clem
    Joined: Dec 20, 2006
    Posts: 2,676

    clem
    Member

    Are you sure that it’s not another problem, such as electrical, worn out carb, etc ?
     
  28. Beanscoot
    Joined: May 14, 2008
    Posts: 1,285

    Beanscoot
    Member

    Keep in mind that if you do chemically clean the fuel tank, the protective terne coating will be removed and the bare steel surface will rust badly, unless a new coating, with its own problems, is applied.
     
  29. Crocodile
    Joined: Jun 16, 2016
    Posts: 185

    Crocodile
    Member

    I have built heavy duty tanks (3/16" thick) for my other money pits, rock crawlers. I have had really good results with the "Northern" brand gas tank sealer. It was used on new construction, just as a rust/moisture barrier. It is blue, and sets up pretty hard when cured. I would not try anything else, myself, after seeing the slop inside a few tanks sealed with some white stuff.
    That said, my Forty has a new gas tank from "Tanks", and I will go the same route on my other projects. Not worth the time, hassle, and risk of disappointing results when a new one is available and reasonably priced.
     
    firstinsteele likes this.
  30. Fireball Five
    Joined: Oct 5, 2018
    Posts: 55

    Fireball Five
    Member

    A friend with a cruddy tractor fuel tank put in some fuel oil and better than half a coffee can of new cheap nuts,3/8 thru1/2 inch, then ratchet strapped it to the outside of the rear wheel of another farm tractor and let it ride there all day. Takes some shaking to get them out but leaves a pretty clean tank.
    We used same principle on old snowmobile tanks that were rusty. Problem is volunteers to do the shaking.
    Not related, but funny inventive story of a friend stranded somewhere on a cross country trip in his Ford p.u. with flathead v8 and bad cam lobe. Not much money so he hitched to town and got some wire and tubing and fittings and a 30 gal barrell.. He jumped on the roof to seat the barrel, tied it down, fueled it up and made it to West coast and back to Iowa. Gravity works!

    Fireball 5
     
    tinsled likes this.

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