Gas Tank Repair: How to Permanently Remove Rust From a Gas Tank

Removing rust is the easiest form of gas tank repair. Follow the steps below to successfully rid your gas tank of any rust settlement. It is an easy process but utmost care should be taken while using the cleansing agents.

Step 1 – Safety Precautions

A gas tank repair could go wrong if necessary safety precautions are not taken. Start off by parking the car in a clutter-free environment, away from flammable substances. Make sure the area is well ventilated.

Step 2 – Draining the Gas

The primary step in the gas tank repair is to drain all the fuel from the tank. Locate the drain cork at the bottom of the tank. Unscrewing the cork will cause all the fuel to flow out of the tank.

Step 3 – Removing Fuel Lines

After draining out the fuel tank the next step is to disconnect the fuel lines. Three connections need to be disconnected. The first one is the supply line, which originates from the bottom of the tank and heads to the engine. The second is the fill tube that originates from the gas entry point. The last one is the vent line.

Step 4 – Removing the Metal Straps

After disconnecting the fuel lines, the next step is to unscrew the metal straps. These straps hold the fuel tank in place. Loosen the nuts with a wrench and pull the fuel tank out of the vehicle.

Step 5 – Muriatic Acid

Once the fuel tank is out of the vehicle, you can start with the rust removal process. The Muriatic Acid works as a good rust removal agent. Be extremely cautious while using this product. The fumes released during the interaction of the acid and the rust is extremely harmful. Keep the fire extinguisher at hands reach.

Step 6 – Examining the Tank

Before you introduce the acid, try and get rid of chunks of rust with the pressure washer. Apply hot soapy water and let the tank rest for sometime before you wash it off.

Step 7 – Pour Acid

After cleaning the tank pour in some water. Now introduce the acid into the tank. Make sure the acid doesn't fall on the outer surface. The composition of water and acid should be 1:1.

Step 8 – Draining the Tank

Let the water and acid mixture rest for 30 minutes to an hour. After that, drain the liquid out of the fuel tank.

Step 9 - Neutralizing the Acid

After removing the acid from the tank it is important to neutralize the tank. To make sure there is no acid residue, introduce a mixture of 1/4 cup of baking soda and 2 gallons of clean water into the tank. Let it rest for some time, and repeat the same process at least 6 times.

Step 10 – Isopropyl Alcohol

Drain the tank and add Isopropyl alcohol into the tank. Fill the alcohol to 70 percent of the tank's capacity. After 10 minutes, drain out the alcohol. The alcohol will rid the fuel tank of any water content.

Step 11 – Gasoline

Now pour gasoline into the tank. Let it settle for around 10 minutes. Drain out the gasoline and make sure to discard it responsibly.

Step 12 – Final Step

The above agents will help in clearing the car's fuel tank of any rust settlement. Fit the tank into position and make sure it is secured properly.