Reply To: How to treat internal rust in 2007 gv650 fuel tank
G’day Rob, i’ll be doing a photo tutorial on Removing Rust from Fuel Tank.
If you have VERY MINOR surface rust you can use an ACID, like WHITE VINEGAR, or the products Ucvmn mentioned.
Simon’s method also works, where you place metal pieces into tank, swirl them around to lightly scratch off rust. Diesel may help keep tank walls from rusting too.
But the BEST METHOD & the only method any of you will ever use again is ELECTROLYSIS. You fill your tank with an electrolyte solution to the top, then you insert a metal rod like a steel bar or bolt into the tank & SUSPEND it so it DOESN’T TOUCH the TANK ANYWHERE, (ie. use wood or non-conducting material to hold the steel bar). Then you CONNECT the TANK & the METAL ROD to a battery, like a car battery, & let it bubble for 2 to 6 hours, depending on how rusted your tank is. DISCONNECT the BATTERY, pull out the Metal Rod & get ready to be really grossed-out cause it will be covered in a black, brown & red goo. That goo is most of the rust from your tank & it’s now stuck to that rod. Swirl the tank and empty the solution. Renew the soulton & pop another rod in the tank, if there’s still rust inside. When happy, empty the tank. Some people dry the tank with hair-dryer or heat gun. I’m just going to fill the tank with petrol or diesel a couple of time to rinse the tank & coat the walls with oiley stuff.
It’s like MAGIC. Just don’t zap yourself, don’t do it with petrol in the tank, don’t leave batteries unattended for long.
How do i keep the car battery from going flat? Good question; you are on the ball. Connect a car battery CHARGER to your battery for the duration.
💡 CAUTION! Don’t leave battery or charger unattended – check them every 20-30mins. They can explode you know. We don’t want that.
-----LaserBeam---->