Repairing fuel tank

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I've got a leak in the rear tank of my pick up truck (96 F250).  It is a diesel.  I don't know what the tank is made out of, but would it be feasible to try and repair it?  I've welded an aluminum gas tank for a boat before and I'm still here.  I know that washing it a lot with soap and water, and then running a car exhaust into the tank for awhile is the preferred method for cleaning it out.  What does everyone think?
Reply:i guess it might work. i once herd of purghing the fumes out with argon should work. just remember diesel dosent light as fast as gasoline but once it does it goes.
Reply:The truck tank is going to be steel. It can be fixed, you know the drill. Diesel is much more stable than gasoline, so cleaning and cooking will do the job. Some of the new trucks have plastic tanks. No dice fixing those. Mild steel filler, mig or tig, oxy/ acetaline brazing or welding would work. I have brazed some tanks because I was worried about too much rust in them. It worked really well.And then, after so much work...... you have it in your hand, and you look over to your side...... and the runner has run off. Leaving you holding the prize, wondering when the runner will return.
Reply:Nick, you can get a new tank from SPI 1-800-628-5442 for under $150.Disclaimer; "I am just an a$$hole welder, don't take it personally ."
Reply:http://www.stoprust.net/POR-15-Fuel-...-Kit-p-11.html  this product works great. a little messy,but very effective.
Reply:Originally Posted by Nick KentI've got a leak in the rear tank of my pick up truck (96 F250).  It is a diesel.  I don't know what the tank is made out of, but would it be feasible to try and repair it?  I've welded an aluminum gas tank for a boat before and I'm still here.  I know that washing it a lot with soap and water, and then running a car exhaust into the tank for awhile is the preferred method for cleaning it out.  What does everyone think?
Reply:Originally Posted by TozziWeldingNick, you can get a new tank from SPI 1-800-628-5442 for under $150.
Reply:Originally Posted by Nick KentI've got a leak in the rear tank of my pick up truck (96 F250).  It is a diesel.  I don't know what the tank is made out of, but would it be feasible to try and repair it?  I've welded an aluminum gas tank for a boat before and I'm still here.  I know that washing it a lot with soap and water, and then running a car exhaust into the tank for awhile is the preferred method for cleaning it out.  What does everyone think?
Reply:The moral of the story is : don't allow a  NAY sayer in the area before welding . They are BAD LUCK , and will cause a miserable accident to happen . A motor cycle shop (gas) welded my motor cycle gas tank, when i was young, no problem , they just had me wash it out with soap and water , before the acetylene welding .I tig welded a diesel fuel tank, after the customer washed it & steamed it out. Also, no problems . The motor cycle tank was steel ,  the diesel tank was aluminum .[SIZE="5"Yardbird"
Reply:Gas is more explosive but it's much harder to get all traces of diesel out of the tank. Don't trust the car exhaust trick it worked in the past but cars burn much cleaner now days. Hands down the best way is to have them steam cleaned.
Reply:Originally Posted by TozziWeldingNick, you can get a new tank from SPI 1-800-628-5442 for under $150.
Reply:I do not know how big your leak is, but if it is not too large, go with JB WELD!I had an old safety clean parts washer that the bottom had some high spots in it and from moving it around holes wore through the bottom.  I took some JB WELD and it never leaked again!Build a Barstool Racer at BarFlyRacers.com!