Sludge in the gas tank

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Sludge in the gas tank

Postby Three Hands » Sun Sep 23, 2012 7:52 pm

I've got a cub with a lot of rust coming through the fuel line, out of the gas tank. Does anyone have good ideas for the best way to clean it out?

Thanks!
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Re: Sludge in the gas tank

Postby Rob in NH » Sun Sep 23, 2012 8:54 pm

you could try a weak mix of water and muriatic acid. i would wear a face mask to be safe.
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Re: Sludge in the gas tank

Postby Rudi » Sun Sep 23, 2012 9:09 pm

Personally, I would take your tank to a local Radiator/Gas Tank Repair Shop. They can boil it out (they use acids of some sort) and then Red-Kote it. I had my '48 - Ellie done and haven't looked back in almost a decade by now I would think -- it has been a long time.

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Re: Sludge in the gas tank

Postby Eugene » Sun Sep 23, 2012 9:17 pm

Search this site. There are a couple of good products that you can use to coat the gas tank interior and some tips on how to do it yourself.
I have an excuse. CRS.
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Re: Sludge in the gas tank

Postby Rob in NH » Sun Sep 23, 2012 9:19 pm

having a rad shop do it for you is better but if your on a budget you can do it for under $10 with the acid.
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Re: Sludge in the gas tank

Postby Yogie » Sun Sep 23, 2012 9:24 pm

If you want to clean and seal it yourself you can drain it all out then add about 1 gallon of pea gravel and shake well.
I've seen some strap the tank to a rear wheel of a tractor jacked up to let it tumble. I myself have straped them to the rack of an ATV to shake while riding.
Then I picked up my Red Coat sealer at the local welding shop for about $24
That was enough to probably coat 2 tanks.
When using the Red Coat you'll need some fast dry thinner to add.
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Re: Sludge in the gas tank

Postby CapeCodCubs » Sun Sep 23, 2012 10:33 pm

Probably the most important thing is to have a clean gas tank...I was going to go the Red Cote route, but I attacked the issue as Yogie suggested with an aggregate to loosen up the rust and that worked wonders...good luck!
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Re: Sludge in the gas tank

Postby tst » Mon Sep 24, 2012 7:47 am

Muriatic acid will eat the rust,make sure to flush it with baking soda after using or the acid will keep eating away at the metal
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Re: Sludge in the gas tank

Postby goldencub » Mon Sep 24, 2012 8:19 am

Three Hands - I sent you a PM about a can of Red Kote I'm not using. Al D
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Re: Sludge in the gas tank

Postby ScottyD'sdad » Mon Sep 24, 2012 11:46 am

I've put 1/4 inch nuts in a cub tank, and left it in the back of the pickup, for a couple of weeks. Shined it nicely. Ed
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