Use the following procedure in order to test for brake problems that may be caused by fluid leaks:

1. Start the engine.
2. Run the engine at idle speed.
3. Shift the transmission into neutral.
4. Maintain constant foot pressure on the brake pedal. If the pedal slowly sinks to the floor, the hydraulic system may have 1 of the following conditions:

•	Internal leakage

•	External leakage

•	Improperly adjusted components

5. Perform a visual inspection of the hydraulic system.
6. Inspect the fluid level of the master cylinder.

•	A slightly low fluid level in either reservoir can result from the normal wear of the front brake lining.

•	An abnormally low fluid level indicates a leak in the hydraulic system.

•	Even with a high fluid level there may be small leaks. Refer to Master Cylinder Reservoir Filling .

If you find no external leaks, internal leakage may be the cause. The master cylinder must be disassembled in order to diagnose internal leakage. Refer to Master Cylinder Overhaul .

Inspect the brake hoses and the brake pipes at least 2 times a year using the following procedure: