Gas Tank Fine Rust Dust Cleanout

I have a gas tank that had a little surfact rust. I cleaned it with solvent and some nuts, bolts and drove around for a couple weeks in the back of my pick up truck. No holes.

Now that it is dry, I still have a cloud of stuff that floats out when I blow air in. It is decreasing and there does not seem to be any flakes but just fine rust dust.

I looked at a tank sealer but I'm not sure it needs that and I have read where some of the are not nearly as good as they say.

Thoughts on what to do now?

So do I....
Seal it inside with something?
rinse it out again?
Just blow it out as good as I can, run it and change the fuel filter a few times?

Thanks....

 

Stick a magnet to the fuel filter and run it

 

I would seal it with some thing. Gas has alcohol in it which attaches moisture.

 

I took my gas tank to the radiator shop and had them clean it out. Cost about $30 bucks.

 

I have a Lincoln SA200 that has a lightly rusted tank like that, and for whatever reason, even with stabilizer the fuel goes bad FAST. I'm planning on having it boiled out and I'm going to get a liquid liner for it as well. I'm tired of having to take the covers off and pull the tank every time I want to use it. Something to ponder...

 

Stick the shop-vac in there while blowing air in with the air hose to disturb the dust. The vacuum should suck out the dusty air.

I'm not a big fa of the sealers. My experience is that they create more issues in the long run. I like the idea of having it boiled out at the rad shop, using the magnet (maybe even one inside the tank), and dual fuel filters (one on each side of the pump).

There are screened pick ups for in the tank, as well. Might help.

I think there is no good way to keep the rust away with modern fuels. I will be trying poly tanks on any future project I may get into.

 

My rad shop dunked and then fixed the pin holes for me with brazing when i had it done on a suzuki motorbike tank (gs-es 700) that was fueling my leg...Bonus.

 

Wonder if we even have a radiator shop in town? Most of them are remove and replace, not repair anymore. Kinda sad we are such a throw away society.