Suzuki GP100- rust in tank...

killa · Won't Shut Up Joined: 18 Oct 2004 Karma :

I’m having problems with fuelling on the GP100. I’m sure it’s due to the massive amount of crap (rust) coming through from the tank. It’s clogging up the filter and it’s inside the carb.

The guy did mention to me the inside of the tank was an issue, and that you can buy something that will coat the inside of it, or something.
I’ve never had experience with this sort of thing. So I’m guessing you empty the tank, throw this stuff in, then what?? Thinking

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cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

do it this way.

https://www.bikechatforums.com/viewtopic.php?p=2773684

or the electrolysis method:

https://www.bikechatforums.com/viewtopic.php?p=1995967/

killa · Won't Shut Up Joined: 18 Oct 2004 Karma :

Thanks for that bud, got no karma to give but i will when i get it again. Thumbs Up

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cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

never knew there was a limit to karma.

Interesting to see your a CAD technician, working with AutoCad? What field are you involved in? Sorry to ask off topic, as I haven't seen anyone else on here that works in the same profession as me!

killa · Won't Shut Up Joined: 18 Oct 2004 Karma :

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

AutoCAD Technician then moved on to Vectorworks in the Architectural metalwork field ie stairs, balustrades, balconies, wall rails , cat ladders. Been doing over 4 years and studied HNC mechanical engineering.

Your doing mechanical engineering and autocad designs? I'm so in the wrong field! Whats your field in design? Construction? Sounds you got the job I wanted! Surprised

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

Vinegar will do the job a bit. Hot phosphoric acid will do the job properly.

Have a look at Nowhere_Elysium's thread in show and tell, I did a little write up on de-rusting a tank with phosphoric acid in that thread.

From experience doing a tank of a similar size to yours, and very rusty, you'll need 2 litres of acid and the rest boiling water. Get a gallon of acid, you'll find other uses for it. Can be re-used as well.

killa · Won't Shut Up Joined: 18 Oct 2004 Karma :

killa · Won't Shut Up Joined: 18 Oct 2004 Karma :

koolio · Spanner Monkey Joined: 08 Apr 2011 Karma :

There's a lot of info and a number of methods of de-rusting but hardly anything on what you actually use or do to proof the inside of a tank afterwards?

People say Kreem is a rubbish solution to this but thats the only product I can really find?

jimbothe · World Chat Champion Joined: 29 Sep 2006 Karma :

*** COUGH***

https://www.bikechatforums.com/viewtopic.php?t=225331
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unitynotsocri... · Banned Joined: 29 Jun 2011 Karma :

I put a load of ball bearings in em with some petrol or parrafin and shake the fker .It takes a while so I used to take a week,evrytime i had a few minutes I'd just give it a good shake.
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prawny1 · World Chat Champion Joined: 28 Jun 2005 Karma :

Is there anywhere near you that can chemicaly dip the tank? It will need repaintin after but should be clean bare steel afterwards,

I have been told that resin sealing fuel tanks is no longer an option anymore because of the increased ethernol content in fuel melting the resin.
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killa · Won't Shut Up Joined: 18 Oct 2004 Karma :

Just a quick update on this little issue. Thumbs Up

I decided to go with the vinegar option after reading on here and seeing some results from a youtube video. I have also bought some petseal (sp?) but not sure if i need it now.

I picked up around 7L of malt vinegar, shook out what i could from the tank and filled her up. I would advise anyone doing this to remember that gaffa tape isn’t going to be good enough for the seal really. I ended up using a rubber nitrile glove i use for working on the bikes and shoved tissue in there. It formed a really good seal like that.
Around 20 hours in the tank i shook it around, pour it out and then used my power washer to rid the tank of the last remaining bits. Using a hairdryer to sort the damp, it’s now ready to be fitted. Personally i don’t think i need the petseal on there, it’s come out really good.
Would any of you recommend i do use it anyway, or sell it and get my dollar back?
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