Tools and Materials:
* Drain pan: Large enough to hold several gallons of coolant.
* Wrench: To remove the radiator drain petcock (usually a 1/2" or 3/4" size but check yours).
* Hose: A garden hose to flush the radiator.
* Distilled water: Several gallons. Do not use tap water. Tap water contains minerals that can cause further problems.
* New coolant: Use the correct type and amount specified in your owner's manual (usually a 50/50 mix of coolant and distilled water).
* Funnel: To make adding coolant easier.
* Gloves: To protect your hands.
* Safety glasses: To protect your eyes.
* Optional: Radiator flush cleaner: Check your owner's manual; some recommend a cleaner, others don't. If you use one, follow its instructions precisely.
Procedure:
1. Cool Down: Let the engine cool completely before starting. Hot coolant can cause serious burns.
2. Prepare the Vehicle: Park on a level surface. Position the drain pan under the radiator drain petcock (usually located on the bottom of the radiator).
3. Drain the Coolant: Carefully open the radiator cap (slightly to allow pressure to release initially) and then fully remove it. Open the petcock and let the coolant drain completely into the pan.
4. Flush with Water: Once the coolant has drained, attach the garden hose to the radiator's upper hose inlet (where the hose from the engine connects to the radiator). Turn on the water slowly and allow it to flow through the radiator and out the drain petcock. You may need to open the petcock again if it's not fully draining. Continue this process for several minutes, until the water runs relatively clear.
5. Optional: Radiator Flush Cleaner: If using a radiator flush cleaner, follow the manufacturer's instructions carefully. This usually involves adding the cleaner to the radiator and letting it sit for a specified time before flushing again with water.
6. Drain the Flush Water: After the flush (with or without cleaner), drain the water through the petcock.
7. Refill with Coolant: Close the petcock. Add the correct type and amount of coolant (usually a 50/50 mix of coolant and distilled water) using a funnel. Consult your owner's manual for the precise amount required.
8. Bleed the Air: Start the engine and let it run for a few minutes. Check the coolant level and add more if needed. This process removes air bubbles that can hinder the cooling system's efficiency. Sometimes a squeeze bulb or similar tool is needed on the upper radiator hose to force the air out. Your Mustang might have a specific coolant bleed screw to help.
9. Check for Leaks: Once the engine is off and cool, inspect for any leaks around the radiator, hoses, and connections.
10. Top Off: After running the engine, let it cool down completely and check the coolant level again. Top it off if necessary.
Important Considerations:
* Consult your owner's manual: This is crucial for specific instructions and coolant type recommendations for your 1997 Mustang.
* Safety First: Always wear safety glasses and gloves. Coolant can be corrosive and harmful.
* Proper Coolant: Using the incorrect coolant can damage your engine.
* Professional Help: If you're uncomfortable performing this task yourself, it's best to take your Mustang to a qualified mechanic.
This process should help you flush your 1997 Mustang's radiator. Remember to always prioritize safety and consult your owner's manual for specific instructions.
