my Honda Pilot YF4 (2023-Present) has a coolant leak, how can I find it

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical issues while working on the vehicle.
• Allow the engine to cool completely before starting any work on the cooling system.

2. Pressure Testing the Cooling System

• Tools Required: Cooling system pressure tester
• Attach the pressure tester to the radiator or coolant reservoir cap.
• Pump the tester to the recommended pressure (usually around 15 psi).
• Observe for rapid loss of pressure, which indicates a leak.

3. Locate the Leak

• Visually inspect areas where pressure loss is detected.
• Use a UV dye in the coolant if necessary; run the engine and use a UV light to identify leaks.

4. Repairing the Leak

• Parts Required: Replacement hoses, gaskets, or water pump as needed.
• If the hose is leaking, remove the clamps and the hose. Install a new hose and secure with clamps.
• For a leaking water pump, remove the serpentine belt and unbolt the water pump. Clean the mounting surface, install a new gasket, and secure the new water pump with specified torque.
• If the intake manifold gasket is leaking, remove the intake manifold, replace the gasket, and reassemble with correct torque specifications.

5. Refill and Bleed the Cooling System

• Refill the coolant reservoir with the manufacturer-recommended coolant.
• Start the engine with the radiator cap off to allow air to escape.
• Monitor the temperature gauge and add coolant as needed until air is purged from the system.