How To Remove Rust From Inside Gas Tank

How to Remove Rust from Inside a Gas Tank

A rusty gas tank is a serious problem. It can restrict fuel flow, contaminate your fuel system, and even lead to engine damage. But don't despair! While it's a challenging job, removing rust from inside a gas tank is entirely possible. This guide will walk you through several methods, from simple cleaning to more intensive approaches. Remember safety first! Always work in a well-ventilated area, and wear appropriate protective gear.

Assessing the Damage: How Rusty is Your Tank?

Before you begin, carefully assess the extent of the rust. A little surface rust is much easier to handle than significant pitting or holes.

• Light Surface Rust: This is often manageable with a simple cleaning.
• Moderate Rust: You might need a more aggressive cleaning method.
• Severe Rust with Pitting or Holes: This may require professional attention or tank replacement. It's crucial to inspect for holes, as they can compromise the tank's integrity and lead to fuel leaks.

Methods for Rust Removal: From Simple to Advanced

Here are several methods you can use, depending on the severity of the rust:

1. Simple Cleaning with a Gas Tank Cleaner: Best for Light Surface Rust

For light surface rust, a commercial gas tank cleaner might be sufficient. These cleaners usually contain solvents that help loosen and remove rust particles. Always follow the manufacturer's instructions carefully. After cleaning, thoroughly rinse the tank with clean water several times to remove all traces of the cleaner.

2. The Vinegar Bath: A Natural Approach for Moderate Rust

White vinegar is a surprisingly effective rust remover. This method is environmentally friendly and relatively inexpensive. However, it takes time.

• Preparation: Completely drain the gas tank. Seal any openings except for the largest one.
• Soaking: Fill the tank with white vinegar, ensuring all surfaces are submerged. Let it soak for several days, or even a week, depending on the amount of rust. The longer the soak, the better the results. You might need to repeat this process.
• Cleaning: After soaking, thoroughly rinse the tank multiple times with clean water until all traces of vinegar are gone.

3. Using a Rotary Tool with a Wire Brush Attachment: Best for Moderate Rust

This method requires more manual labor but can be effective for moderate rust.

• Preparation: Completely drain the gas tank. Protect yourself with safety glasses and a dust mask.
• Cleaning: Insert the wire brush attachment into the tank and carefully remove the rust. This can be a tedious process, requiring patience and persistence. Work in sections to ensure thorough cleaning.
• Post-Cleaning: Rinse the tank thoroughly with clean water.

4. Media Blasting (Professional Method): The Most Effective Approach for Severe Rust

For heavily rusted tanks, media blasting is the most effective method. This professional technique uses a pressurized air stream to blast small abrasive particles onto the tank's interior, removing rust and other contaminants. This should only be done by professionals with the proper equipment and safety precautions.

Post-Cleaning Procedures: Protecting Your Tank

Regardless of the method used, after cleaning, it's crucial to properly protect your gas tank from future rust.

• Thorough Drying: Ensure the tank is completely dry. A compressed air source is ideal for reaching all areas.
• Sealing: Apply a rust inhibitor or fuel tank sealant to the interior of the tank to prevent future rust formation.
• Inspection: Carefully inspect the tank for any remaining rust, holes, or damage.

Conclusion: A Clean Tank is a Happy Tank

Removing rust from inside a gas tank is a job that demands patience and attention to detail. Choose the method that best suits the level of rust and your skills. Remember to always prioritize safety and take appropriate precautions. By following these steps, you can restore your gas tank to optimal condition and ensure your vehicle's fuel system remains healthy.