what should I do if my Honda Pilot YF3 (2016-2022) has a radiator leak?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool and disconnect the battery.
• Drain the coolant from the radiator using a drain pan.

2. Remove Radiator

• Remove the radiator support or front grill, if necessary, to gain access.
• Disconnect the upper and lower radiator hoses using a hose clamp tool.
• Disconnect the transmission cooler lines (if applicable) using a flare nut wrench. Have a catch pan ready for any fluid that may leak.
• Unbolt the radiator from its mounting brackets using a socket set.
• Carefully lift the radiator out of the engine bay.

3. Inspect and Repair

• Inspect the radiator for leaks and damage. If minor damage is found, consider using a radiator sealant as a temporary fix.
• For significant damage, replace the radiator. Remove the old rubber grommets and install new ones on the new radiator.
• Clean the mounting surfaces on the vehicle to ensure a proper fit.

4. Install New Radiator

• Position the new radiator into the engine bay and secure it with bolts to the mounting brackets.
• Reconnect the transmission cooler lines and tighten them to the manufacturer's specifications (use a torque wrench if necessary).
• Reattach the upper and lower radiator hoses, ensuring the clamps are secure.

5. Refill Cooling System

• Fill the radiator with a 50/50 mixture of coolant and distilled water.
• Start the engine and allow it to reach operating temperature while checking for leaks.
• Bleed the cooling system to remove any air pockets by running the engine with the radiator cap off until the thermostat opens and coolant circulates.

6. Final Checks

• Reinstall any removed components, such as the radiator support or front grill.
• Reconnect the battery.