How to Flush a Car’s Brake System

Introduction

A brake system is one of the most important safety features on a car. It allows you to slow down and stop the vehicle, and it helps to prevent accidents. Over time, however, brake fluid can become contaminated with water and other contaminants. This can lead to a decrease in braking performance, and it can even cause the brakes to fail. Flushing the brake system is a relatively simple procedure that can help to improve braking performance and prevent problems.

Materials Needed

• New brake fluid
• Brake fluid tester
• Funnel
• Hose
• Wrench

Step-by-Step Instructions

1. Check the brake fluid level.

Before you start flushing the brake system, it’s important to check the brake fluid level. The fluid level should be between the “min” and “max” marks on the reservoir. If the fluid is low, add new fluid until it reaches the correct level.

2. Test the brake fluid.

Once you’ve checked the brake fluid level, it’s a good idea to test the fluid to see if it’s contaminated. You can do this using a brake fluid tester. The tester will measure the amount of water in the fluid, and it will give you a reading of “good,” “fair,” or “poor.” If the fluid is “poor,” it’s time to flush the brake system.

3. Gather your materials.

Once you’ve decided to flush the brake system, gather all of the materials you’ll need. This includes new brake fluid, a brake fluid tester, a funnel, a hose, and a wrench.

4. Disconnect the brake line.

To start flushing the brake system, you’ll need to disconnect the brake line from the caliper. Use a wrench to loosen the brake line fitting, and then pull the brake line off of the caliper.

5. Attach the hose to the brake line.

Once the brake line is disconnected, attach a hose to the brake line. The hose should be long enough to reach the brake fluid reservoir.

6. Open the brake fluid reservoir.

Open the brake fluid reservoir and insert the funnel into the reservoir. The funnel will help to prevent spills when you’re adding new brake fluid.

7. Pump the brake pedal.

Start pumping the brake pedal slowly. As you pump the brake pedal, the old brake fluid will be forced out of the brake line and into the reservoir. Continue pumping the brake pedal until the fluid in the reservoir is clear.

8. Close the brake fluid reservoir.

Once the fluid in the reservoir is clear, close the reservoir and tighten the cap. Reconnect the brake line to the caliper and tighten the brake line fitting.

9. Test the brakes.

Once you’ve flushed the brake system, it’s important to test the brakes to make sure they’re working properly. Drive the car around and brake at different speeds. The brakes should feel firm and responsive.

Conclusion

Flushing the brake system is a relatively simple procedure that can help to improve braking performance and prevent problems. By following the steps in this guide, you can flush the brake system on your own and save yourself a trip to the mechanic.