Brake Booster — Check for Leaks (Honda CR-V 2)

1. Connect a vacuum gauge (A) between the brake booster and the check valve.



2. Start the engine, adjust the engine speed with the accelerator pedal so that the vacuum gauge readings are equal to 40.0-66.7 kPa (300-500 mmHg.), then turn off the engine.

3. Take readings from the vacuum gauge. If after 30 seconds the vacuum gauge readings drop by 2.7 kPa (20 mmHg.) or more, check for leaks on the following components:

• Check valve
• Vacuum hose, tube
• Seals
• Brake booster
• Master cylinder

Note: Do not attempt to disassemble the brake booster. Replace the brake booster assembly with a new one.