Therefore, the typical sequence is:
1. Rear Passenger Side (Right Rear): This is usually farthest from the master cylinder in dual-diagonal systems.
2. Left Front: This is diagonally opposite the right rear.
3. Right Front:
4. Left Rear: This is closest to the master cylinder.
Important Considerations:
* Consult your owner's manual: The best and most definitive source for your specific Buick Riviera's bleeding sequence is the owner's manual. It might have a diagram.
* Dual vs. Single Diagonal: If it's a single diagonal system (less likely on an '85 Riviera), the sequence would be different. You need to identify your system.
* Bleeding Procedure: Regardless of the sequence, ensure you follow proper brake bleeding procedure. This typically involves having someone pump the brake pedal while you open and close the bleeder valve on each caliper. Use a clear tube to collect the fluid and keep the master cylinder reservoir topped off. Air bubbles in the line will need to be cleared and fluid should be clear of bubbles before sealing.
* ABS: If your Riviera has Anti-lock Braking System (ABS), bleeding might be more complex and require a specialized scan tool. Improper bleeding of an ABS system can damage the system.
If you are unsure about any part of this process, it's best to consult a qualified mechanic. Improperly bled brakes are dangerous.
