How to Repair a Radiator

If you're trying to learn how to repair a radiator, chances are you're already a pretty hands-on type of person. A radiator problem, even if minor, isn't something to tackle if you don't have any experience working with cars. If you do decide to attempt to repair your radiator yourself, here are some tips to help you.

The first thing you want to do when dealing with a radiator problem is to determine the source of the problem. Your radiator could have an array of problems, including over pressurization, fin bond failure, or a radiator leak. Most of the problems that your radiator will have will require that you seek the help of a professional. One of the only radiator problems that you should really tackle yourself is a radiator leak.

If your radiator has a leak, you'll need to find where the leak is coming from; it could be either the radiator itself or one of the hoses. If it's the radiator, look at the cap to see if that is the problem.

The next thing you should do is to fix the radiator problem. For a radiator leak, you may be able to simply patch it, using a kit you can find at any auto parts store. One of these is a stop-additive, which is great for repairing smaller radiator leaks. The stop-additive is simply poured into your radiator and will keep it from leaking further.

If your radiator has larger leaks, you'll need to take a more hands-on approach. This will vary depending on the age of your car and the material that your radiator is made from, but some radiator leaks can be used simply using an epoxy gun, while others have to be fixed using a smoldering gun.

Make sure you never take the radiator cap off while the car is hot. This can cause hot coolant to bubble up and burn you. If you have to let the car run for awhile to determine the source of the leak, give it a chance to cool down again before taking off the radiator cap.

If this doesn't fix the problem with your radiator, chances are you'll need to have it professionally repaired.

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