What you'll need:
* A helper: This is crucial. One person operates the clutch pedal, the other bleeds the system.
* Clutch bleeding kit: This usually includes a clear hose, a suitable wrench to fit the bleeder valve (typically 8mm or 10mm), and a container to catch the fluid.
* New DOT 3 brake fluid: Never use anything else. Top off your master cylinder reservoir *before* you start.
* Jack and jack stands (optional but recommended): Makes access easier.
* Clean rags: To wipe up spills.
* Gloves: To protect your hands.
Procedure:
1. Locate the bleeder valve: This is on the slave cylinder, which is attached to the transmission bell housing. You'll likely need a flashlight and possibly a mirror to find it. It's usually a small valve with a small hex fitting.
2. Attach the hose: Attach one end of the clear hose to the bleeder valve and the other end to the container. Make sure the hose is secure to prevent leaks.
3. Have your helper pump the clutch: Instruct your helper to slowly and firmly depress the clutch pedal several times. They should hold the pedal down on the last pump.
4. Open the bleeder valve: While your helper is holding the pedal down, carefully open the bleeder valve slightly using the appropriate wrench. You should see fluid flowing through the hose. If no fluid comes out, your helper might not be depressing the pedal far enough or there's another issue.
5. Close the bleeder valve: Once the flow slows significantly or stops, close the bleeder valve.
6. Repeat steps 3-5: Repeat this process several times until the fluid flowing through the hose is clear and free of air bubbles.
7. Check the master cylinder reservoir: Keep an eye on the fluid level in the master cylinder reservoir and top it off as needed during the bleeding process. Never let the reservoir run dry.
8. Re-check the clutch: After bleeding, have your helper check the clutch engagement. If it's still spongy or there's no engagement, there might be other problems (such as a leak in the system, a faulty master or slave cylinder).
Important Considerations:
* Fluid type: Use only DOT 3 brake fluid. Other fluids can damage the system.
* Air bubbles: The presence of air bubbles indicates incomplete bleeding. Continue the process until the fluid is clear.
* Master cylinder: If you have low fluid in the master cylinder reservoir after bleeding, you may have a leak in the system somewhere and need further diagnosis.
* Slave cylinder: The slave cylinder itself can also fail and this may explain the lack of a clutch feel and the need to bleed the system.
* If you are unsure about any part of this process, consult a qualified mechanic. Improper bleeding can damage your clutch system.
This process should resolve most air in the clutch system. If the problem persists after thorough bleeding, a more serious issue, like a leak or a faulty component, may be present. It's better to seek professional assistance if you're uncomfortable with this procedure or if it doesn't solve the problem.
