How To Fix Brake Lines On A Car

FIXIT HowTo Install new brake lines and pads Dirt Wheels Magazine
FIXIT HowTo Install new brake lines and pads Dirt Wheels Magazine from

How to Fix Brake Lines on a Car – 2023 Article


Brake lines are crucial components of a car’s braking system, responsible for transferring hydraulic pressure from the master cylinder to the brake calipers or wheel cylinders. Over time, these lines can become damaged or corroded, leading to brake failure or reduced braking performance. In this article, we will guide you through the process of fixing brake lines on a car, ensuring your safety on the road.

Step 1: Gather the Necessary Tools

Before you start repairing the brake lines, make sure you have the right tools for the job. You will need a flare nut wrench, line wrench, tubing cutter, flare tool, tubing bender, and a brake line kit that matches your car’s specifications. Additionally, safety goggles and gloves are essential to protect yourself from any potential brake fluid spills.

Step 2: Locate the Damaged Brake Line

Inspect your car’s brake lines to identify the damaged section. Look for any signs of leaks, cracks, or corrosion. Common areas prone to damage are near the wheels, where the lines are exposed to road debris and salt. Once you have located the damaged area, proceed to the next step.

Step 3: Remove the Old Brake Line

Begin by loosening the brake line fittings using the line wrench and flare nut wrench. Be careful not to damage the fittings during this process. Once the fittings are loose, gently remove the old brake line from the car, taking note of its routing for the installation of the new line.

Step 4: Install the New Brake Line

Using the tubing cutter, carefully cut a section of the new brake line to match the length of the old one. Ensure the cut is clean and free from burrs. Bend the tubing to match the original line’s shape and route it following the same path. Use the tubing bender for smooth and accurate bends. Once in place, attach the fittings using the flare nut wrench.

Step 5: Bleed the Brake System

After installing the new brake line, it is crucial to bleed the brake system to remove any air bubbles. Start with the wheel furthest from the master cylinder and work your way closer. Have a helper pump the brake pedal while you open the bleed valve to release the air. Repeat this process until a steady stream of brake fluid without air bubbles emerges.

Step 6: Test the Brakes

Once you have completed the repair and bled the brake system, it’s time to test your brakes. Find a safe and open area to drive your car and gradually apply the brakes to ensure they are functioning correctly. Pay attention to any unusual noises or vibrations and make any necessary adjustments if needed.


Fixing brake lines on a car is a task that requires patience and precision. By following the steps outlined in this article, you can safely replace damaged brake lines and restore your car’s braking performance. Remember to take the necessary safety precautions and, if you are unsure about any step, consult a professional mechanic for assistance. Drive safely!