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Removing rust from a motorbike's fuel tank? Answered

My dad has got a yamaha xs650 but the fuel tanks got rust in it. What solvents can I put in to remove the rust without removing the tank or messing up the fuel? The pics are of 1)in the tank 2)The motorbike 3)a blurry pic of inside the tank

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KentsOkay

9 years ago

That's an awesome bike!

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thermoelectricKentsOkay

Reply 9 years ago

Yeah, It is. It's my dad's bike and he just got an old H1 Kawasaki that he's bringing back to life.

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LuciKnows

9 years ago

The rusted area is your pickle. Getting inside there is really the issue. Cause removing rust is pretty simple and there are soooo many great ways to do it.
Here is an article on how to remove rust. How to remove rust

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Rishnai

9 years ago

I'm going to be attacking a worse rust issue in a Kawasaki 700 tank sometime in the near future. 3 gallons of gas + humidity + 15 years of storage = HOLY CRAP, RUST! I'll try and post how it goes.

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killerjackalope

10 years ago

You could use coca cola or molasses, if you feel like that, you can also put in the likes of ball bearings and basically shake it up using the abrasive actions to remove all the rust...

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Sunbankskillerjackalope

Reply 10 years ago

If coca cola cleans rust and drains imagine what it does to your stomach...

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killerjackalopeSunbanks

Reply 10 years ago

Not very much, teeth on the other hand have calcium compounds as a makeup, the acid is good at that.

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Sunbankskillerjackalope

Reply 10 years ago

Ooh yeah good point O_o I don't like coke, it just tastes funny...

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thermoelectrickillerjackalope

Reply 10 years ago

My dad says he has heard that coca cola or molasses will work but he doesn't know how well, can you verify that Thanks for the response

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gimmelotsarobotsthermoelectric

Reply 10 years ago

I would not use anything with sugar. I would suggest finding a vehicle restoration supplier. If not, Coke is a last resort.

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killerjackalopethermoelectric

Reply 10 years ago

That'd be good to remove the rust at the base but it would still be stuck, if there's a handy mounting point chuck in a bunch of BB's and spin the tank overnight or very fast for a while, that would get the worst of it before removing via electrolysis.

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thermoelectrickillerjackalope

Reply 10 years ago

might get my dad into trying that, I just uploaded some pics of the tank and the bike

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killerjackalopethermoelectric

Reply 10 years ago

It would remove thicker scaling first and make it easier to remove the rest via electrolysis, plus by cleaning in between it wouldn't be as hard to get the tank clean at the end of it all...

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NachoMahmathermoelectric

Reply 10 years ago

. Phosphoric acid is listed fourth in the ingredients for Coca-Cola. Coke will work, but it will take a while if the rust is very deep. . Wouldn't be surprised to find out it's what gives molasses its' "bite," but too lazy to look it up. . . If it's just surface rust, killerjackalope's ballbearings (or coarse sand; both would probably work best) may do the job. And much safer than working with PA (in a concentration that will work very fast).

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skunkbaitNachoMahma

Reply 10 years ago

PA is probably best.Ball bearings, pennies, and washers are good too. THrow a handul in and use a high pressure washer on it. You can follow that with a can of carb cleaner. Most importantly, I'd use 2 in-line fuel filters instead of just one. Carry a couple of spare filters with you, and be ready to change them often till all the rust residue is gone.

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thermoelectricskunkbait

Reply 10 years ago

I think i'll try that if the other methods don't work BTW whats PA

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Rishnaithermoelectric

Reply 10 years ago

By the way, wear every sort of glove you can think of whilst working with industrial acids. Very unpleasant things happen otherwise.

Phosphoric acid isn't quite as evil as hydroflouric acid, though...

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thermoelectricRishnai

Reply 10 years ago

yes thats true i think i might go with reverse electro-plating though

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thermoelectricRishnai

Reply 10 years ago

I tested that last night on a rusted up can and it WORKED!!

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Rishnaithermoelectric

Reply 10 years ago

Huzzah! I greatly dislike keeping industrial acids around, so next time I need to remove a bunch of rust, I know what I'll try.

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GoodhartRishnai

Reply 10 years ago

if the rust is on the outside of something (not applicable here inside the tank), there are a number of products that convert rust "back into iron" and then coat it to prevent reoccurrence.

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killerjackalopeNachoMahma

Reply 10 years ago

Yep, molasses gets it's bite from the same phosphoric acid but the thickness seems to pull rust off when it's moving... Again ball bearings are pretty good or even sand, if he's being extra careful you could run a solution of PA through the tank overnight to remove and very small bits of rust, then flush it several times and use skunkbaits double filter idea.

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NachoMahma

10 years ago

. Phosphoric acid. Google "rust gas tank"