1. Identify the Leaking Hose:
* Locate the leak: Carefully examine the rear of the engine. Look for wet spots, dripping fluid, or the obvious source of the leak. Note the color of the fluid (green/yellowish = coolant, brownish/reddish = ATF, clear = possibly power steering fluid). This is crucial.
* Trace the hose: Once you've found the leak, follow the hose to determine what system it belongs to. Take photos if it helps.
* Consult a repair manual: A repair manual specific to your 89 Buick Regal (Haynes or Chilton are good options) will show you diagrams of the hoses and their routing. This is essential for proper identification and repair.
2. Gather Supplies:
* New Hose: You'll need a replacement hose of the correct length, diameter, and material. The auto parts store will need the year, make, and model of your car, and ideally the hose's part number (found in your repair manual or on the old hose itself, if possible).
* Clamps: These are vital to secure the new hose. Choose the correct size and type for your hose. Worm-gear clamps are usually preferred for their adjustability.
* Tools: You'll likely need pliers (for clamps), screwdrivers (possibly, depending on how the old hose is attached), rags, and potentially a wrench (depending on the hose's location and connections).
3. Repair Process (General Steps):
* Safety First: Before you start, allow the engine to cool completely. Working on a hot engine is dangerous. Disconnect the battery's negative terminal as an added safety precaution.
* Remove the old hose: Carefully remove the old hose clamps. You may need to use pliers to loosen and remove them. Once the clamps are off, gently pull the hose off its fittings. Be prepared for some fluid spillage (wear gloves and eye protection!).
* Inspect fittings: Check the hose fittings for damage. If they're cracked or damaged, they'll need to be replaced as well.
* Install the new hose: Carefully install the new hose onto the fittings. Ensure it's seated properly.
* Secure with clamps: Tighten the new clamps securely but avoid over-tightening, which can damage the hose.
* Refill fluids: If it's a coolant hose, refill the radiator and coolant reservoir. If it's power steering fluid, top off the reservoir. Check for leaks and add more fluid as necessary.
* Start the engine: Start the engine and check for any further leaks. Let it run for a while to ensure the repair holds. Observe for any unusual noises or performance issues.
Important Considerations:
* Difficult access: The rear of the engine can be a tight space to work in. You may need to remove other components to gain better access. Again, a repair manual will be invaluable here.
* Professional help: If you're not comfortable working on your car, take it to a qualified mechanic. A seemingly simple repair can become complex and potentially damaging if done incorrectly. Incorrectly repairing a coolant leak, for example, can lead to engine overheating and serious damage.
This is general advice. Without knowing the specific hose, giving more detailed instructions is impossible. Always consult a repair manual specific to your 1989 Buick Regal for detailed instructions and diagrams. This is crucial for a safe and successful repair.
