How to Fix a Leaking Honda Radiator
After some time, the radiator of your Honda may break down and start a leak. The leak can be blamed on a leaky radiator cap, an external leak caused by a bad water pump or blown radiator hose, or an internal leak coming from the head gasket or engine block. You have to figure out which part of the radiator is causing the leak, and we're here to help you. We won't only guide you with tracing the source of the leak but will also provide you repair options for each possible cause of trouble.
Difficulty level: Moderate
Things you'll need:
- Crimping tool
- Cold-weld compound
- Metal patch product
- Epoxy hardener
- Additive for stopping leaks
Step 1: Look for signs of a radiator leak and figure out where this is coming from. When coolant levels often run low, you have to consider the possibility of a radiator leak. A puddle of bright liquid underneath the vehicle is also a sign. To trace the source of the leak, let the engine run warm as you open the hood. See if there's leak coming from the hose. Also check the cap or seam for leaks.
Step 2:Fix a radiator tube leak. To separate the cooling fins from the tube, use pliers to pull them. After this, you have to cut the tube and roll the ends onto themselves and crimp them. To seal the crimp, apply some cold-weld compound. This will become hard after a few hours.
Step 3:Replace the gasket or cap to repair the leak coming from a radiator cap. Make sure that the cap or gasket is a perfect fit to solve the real problem. Use the vehicle manual as reference.
Step 4:Use a metal patch product to fix a radiator seam leak. The metal patch product must be applied on the outside of the seam. Give it enough time to dry completely. It usually takes overnight for it to harden.
Step 5:Stop the radiator leak. To fix the leak on the radiator itself, you have to drain it first. Once empty, you have to clean the leaking part. The cold weld will seal leaking part. It can take about a couple of hours for the cold weld to harden.
Step 6: Repair the crack or hole in the radiator. If the radiator has a hole or a crack, this can be fixed using epoxy hardener or an additive for stopping leaks. The epoxy hardener is to patch openings on plastics. The additive, meanwhile, is often combined with antifreeze. This is quite easy to use. Just be sure to follow the instructions on the label.
To prevent radiator damage or wear, flush the radiator every six months or so. Do this regularly to extend the life of the unit and to keep it working at its prime. It will also help if you check the fluid level every now and then so that you can refill it when needed. Some repairs can be temporary fixes. If the radiator is severely damaged or the issue is recurring, take this to a repair specialist who has access to special equipment. At times, it would be best just to have the radiator replaced altogether.