Restore motorcycle tank - can you do that yourself?

If the tank of motorcycle or moped is rusty inside, it should be removed from the rust. How this works, and whether you can do it yourself, we have examined in this post for you. You will learn what you need to build and seal, and how you can actually refurbish your tank. Read on here.

Refurbishment and sealing as a service

As a rule, tanks can also be derusted and sealed by specialists. If the rust has spread so far that threatens rust, this step is certainly recommended. Professionals can also weld and re-seal damaged tanks.

For a pure refurbishment and de-rusting of the tank including coating, the retailers generally demand about 130 - 150 EUR. For this, the tank is professionally cleaned, freed from any rust inside and newly coated inside.

For welding and sealing work on already rusted and damaged tanks additional fees are due - in these cases, however, you can not get around anyway. Whether you do the work for a coating and de-rusting yourself is up to the respective motorcycle owner. The effort is quite high - and the result, unlike the professional, the do-it-yourself is not always perfect.

How to build a tank

First, the following parts must be removed when removing the tank:

  • tank sensor
  • petcock
  • filler cap

All remaining connection sockets must be covered acid-proof. This works best with several layers of latex gloves. In order for the rust to work and no parts to be damaged by the acid, the seal must be perfect in every case.

Tank de-rust - step by step

  • Hydrochloric acid, better oxalic acid
  • phosphoric acid
  • Epoxy coating
  • brawn
  • Tool for removal

1. Remove the tank

Remove tank as described above, and also disassemble fuel gauge and fuel cock. Seal everything with latex. Fill with water and make a leak test: turn the tank. There must be no leak of water anywhere.

2. De-rust the tank

Add acid and slowly turn the tank in all directions. Hydrochloric acid works very fast but can attack the metal. Oxalic acid is gentler, but takes longer. But if something goes wrong, the painted parts are not attacked.

Turn the tank periodically to allow the acid to spread throughout the interior. With weak solutions of oxalic acid, the tank could also be placed completely in an acid bath without great danger to the paint. In this case, use at most 10% oxalic acid. Then remove acid from the tank. The interior of the tank must now be blank. Otherwise repeat.

3. Seal

Add phosphoric acid to inactivate rust and avoid re-rusting. Phosphoric acid acts as a rust remover. Remove acid again. Flush the tank and pour in epoxy. Turn again in all directions so that the coating reaches all sides of the tank. When the coating has cured (usually after 24 hours), the tank is completely sealed.

Tips & Tricks

In the case of severe rust damage, the refurbishment, sealing and sealing should be left to the specialist.

Video Board: How To Remove Rust From A Motorcycle Gas Tank: NO ACID