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06-16-2010, 11:18 AM | #1 |
Registered User
Join Date: Apr 2010
Location: Boerne, Texas
Posts: 46
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Gas Tank Cleaning
Yesterday I finally got started on my 71 GMC LWB. When I removed the old sending unit I noticed that there is some light rust all inside the tank. My question is what can I do to clean it out, without any kind of acids, or radiator shop. I need a simple fix that will last a few months until I get a new tank.
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06-16-2010, 11:57 AM | #2 |
Registered User
Join Date: Mar 2008
Location: Lawrenceville, Ga
Posts: 300
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Re: Gas Tank Cleaning
I have heard of some people using water to rinse the tank and then insert a length of chain and slosh it around.
There are 3 different kits available, but I don't hear to many good results using the kit. I would imagine it's because it's difficult to get it solvent free for the coatings to stick. Just make sure it is only temporary though... |
06-16-2010, 03:44 PM | #3 |
The Red Menace
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
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Re: Gas Tank Cleaning
I've just been replacing fuel filters on a regular basis. I put one under the cab and I also change the one on the carb. It's only temporary until I get the tank replaced. I'm not going to try and clean it.
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1971 Custom 10 - 350/350TH - Pwr steering, gauges, Chrome front bumper, Chrome hubcaps, Door edge guards, HD rear springs (current) 1968 C-20 Custom Camper - 350/350TH (orig 327), Pwr steering & brakes, gauges w/tach (former) 1968 C-20 - 307/3sp column (Dad's when I was a kid) "Driving is like coloring. Things get messy if you can't stay inside the lines." |
06-16-2010, 06:25 PM | #4 |
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Join Date: May 2010
Location: ft smith arkansas
Posts: 131
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Re: Gas Tank Cleaning
with a see thru fuel filter my gas was rust color. i pulled the tank, dumped the crap out, put 5 gallons of solvent(parts cleaner) in it, shook it around and dumped it out. put it back in and my filter turned clear in 2 minutes of running. this should be fine if u gonna replace it later anyway.
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06-16-2010, 11:18 PM | #5 |
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Join Date: Jul 2006
Location: Ozark, MO
Posts: 4,888
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Re: Gas Tank Cleaning
I hear the POR-15 kit works very well but is is not cheap and very involved. There are some others but the results are iffy. I say just be on the lookout for a new or good used replacement.
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06-17-2010, 12:01 AM | #6 |
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Join Date: Oct 2001
Location: Lancaster S.C.
Posts: 4,752
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Re: Gas Tank Cleaning
I've cleaned several tanks,,, used carb cleaner and a 24" logchain slosh it around with a friend and then run water through it until water is nice and clear then reinstall and run the 2 clear fuel fliters mention in the post above!
Worked fine for my but I never keep a truck to long until someone has to have it.lol If your gonna keep her then buy her a new tank later on down the road, your carb.will thank you for it!!
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06-17-2010, 04:43 AM | #7 |
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Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
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Re: Gas Tank Cleaning
i always heard to stick some coins down in there with some gas to fill the bottom of the tank then shake the crap outta it and do that a few times then rinse it out real well
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1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
06-17-2010, 04:37 PM | #8 |
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Join Date: Jun 2010
Location: Wallingford,Ky
Posts: 22
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Re: Gas Tank Cleaning
i used a couple of kits from Eastwoods a few years ago. They came with a small chain and acid for etching. If it wasn't etched real good it wanted to peel off. I recently used some stuff called ''red coat''. So far so good, but its only been a few months.
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06-17-2010, 04:55 PM | #9 | |
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Location: Tucson
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Re: Gas Tank Cleaning
Quote:
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06-17-2010, 05:08 PM | #10 |
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Join Date: Jun 2010
Location: Wallingford,Ky
Posts: 22
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Re: Gas Tank Cleaning
I forgot to mention that "red coat" recommends using the small chain to knock loose the rust and then rinse and let dry. They say acid is not needed but you can use it if you prefer. I got it my local radiator shop. Some radiator shops will clean and coat the tanks for you.
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06-18-2010, 10:29 AM | #11 |
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Join Date: Apr 2010
Location: Boerne, Texas
Posts: 46
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Re: Gas Tank Cleaning
Thanks for all the info guys. I am just going to rinse the tank out as much as possible and purchase a tank in a few months. I wont be driving it to much over the next few weeks gotta replace the clutch and Im replacing all the stock interior. I will try and get some pics up of this one and Im gonna try to get some pics of my 67 3/4 ton. Anyone know of a good place to buy a tank, besides LMC??????
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06-18-2010, 11:08 AM | #12 | |
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Join Date: Oct 2001
Location: Lancaster S.C.
Posts: 4,752
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Re: Gas Tank Cleaning
Quote:
Sometime they mail coupon out to the public also! Hope this also helps...........
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