My gas cap after parking for 11 years; tank recondition?

[DaveToo]

My SV tank's gas cap. Had a little trouble opening. Below shows why

I thought I'd flushed all the U4 out. The tank itself is also obviously going to be horrible. How should I clean (and if needed, recoat) it?

Guess I'll have to rebuild the fuel pump too, and the pickup/valve. And replace all the lines.

 

[motomania2007]

I think I'd invest in a replacement tank. It's been my experience that when you get a corroded tank you're chasing it forever because it always causes weird problems with all the crap that it sheds.

 

[DaveToo]

I'm on a super-tight budget. I'll do the clean and seal, and run a bunch of gas into a mason jar to inspect. I can't afford all this stuff just to sell it.

yes it will all be disclosed. Probably via links to BARF

 

[msethhunter]

If you're going to do it yourself, go buy a box of BB's and roll them around in there for a while to knock all the big crap off as best as possible. I've had good results just doing that, and keeping gas in it. If you really want to coat the inside of the tank, do that, and then fill it with about a quart of muriatic acid and the rest water, let it sit overnight, then seal it. You need to etch the surface for that stuff to have any kind of hope not pealing off.

 

[GPzPop]

vinegar soak

Costco has for cheap

 

[msethhunter]

vinegar soak

Costco has for cheap

Vinegar does a piss poor job. Muriatic acid is about $5-$7 at either a pool supply store or a local home store for a quart.

OP, don't use vinegar. You'll wish you hadn't. It's acidity is about 30-40 times less than muriatic acid.

 

[wilit]

Don't waste your time with the homebrew fixes. I did the vinegar and chain and reverse electrolysis and it still never 100% fixes the issue. Finding a good used tank is the easiest and probably cheapest out. Otherwise, take you tank to a shop, have them boil the tank and seal it. It'll probably cost you a couple hundred bucks.

 

[kpke]

vinegar soak

Costco has for cheap

Hi Simon. I couldn't find it there???

What type of vinegar do they carry there?

What aisle?

What shelf?

Yes, getting carried away but obviously you bought it there. I'll keep checking every time I go.

 

[kelsodeez]

Eastwood gas tank sealer kit worked for me for a very rusted out old ysr50. Muratic acid to etch, wash out with water, dry out, apply coating inside and let it cure for a few days. But that's really the nuclear option. you should try other means to salvage it if there isnt a ton of rust in there

 

[GPzPop]

hey Ken
white vinegar, in the baking / cooking oil aisle. 2 pack of large 2 gallon bottles for about 5 bucks

Hi Simon. I couldn't find it there???

What type of vinegar do they carry there?

What aisle?

What shelf?

Yes, getting carried away but obviously you bought it there. I'll keep checking every time I go.

 

[jimboecv]

If you're going to do it yourself, go buy a box of BB's and roll them around in there for a while to knock all the big crap off as best as possible. I've had good results just doing that, and keeping gas in it. If you really want to coat the inside of the tank, do that, and then fill it with about a quart of muriatic acid and the rest water, let it sit overnight, then seal it. You need to etch the surface for that stuff to have any kind of hope not pealing off.

Add a can of Sea Foam and equal amount of gas. I've added a hand full of nuts and bolts to it for added abrasive action.
That said, new tank is the best choice. In line fuel fliters for eternity.

 

[PaleHorse]

I used soda ash/water and electrolysis on a Suzuki tank and it worked great. I hooked the positive lead to an Allen wrench supported by a piece of lexan and the negative terminal to the tank itself off of a car battery. Had the battery hooked up to a charger. Let it run for 24 hours 3 times and scooped all the crap out periodically. The tank came out perfectly clean. I did this over a year ago and it's still spotless. There are videos online on how to do it. Just make sure it's in a well ventilated area.

If you are anywhere near the coast or south bay, I have all the supplies to do it. You can use them if you want to give it a shot.

 

[kpke]

hey Ken
white vinegar, in the baking / cooking oil aisle. 2 pack of large 2 gallon bottles for about 5 bucks

Shit. I was just there this week and forgot to look. Thanks!

 

[msethhunter]

Shit. I was just there this week and forgot to look. Thanks!

You're going to waste your money. I did.

Here's why you don't use vinegar. Even after sitting for months in vinegar, he still has to hit the tools with a wire brush. It's garbage for removing rust.


youtu.be/vX9ioSDESzA

You won't have to do that with muriatic acid. The rust will be just gone.