how much does it cost to fix a radiator leak

How Much Does it Cost to Fix a Radiator Leak +Fix (How to Fix a Plastic Radiator)

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If your vehicles radiator is leaking the first questions  you want to as are how to fix leaking radiator or  how to fix a plastic radiator that is leaking,  how much does it cost to fix a radiator leak or how long does it take to fix a coolant leak?

It is totally expected that every component of a car will get damaged as time goes on. The radiator is also a part of vehicle that gets damaged over time.

Its core, hoses, and housing can break or have holes if they are not maintained regularly.

This post focuses on the repair cost for fixing radiator, however if you are wondering  what could be the outcome of  driving car with no water in radiator or a cracked radiator then here is post you should read.

You also might love to read this post on how to fix radiator leak with epoxy and this one on Jeep Grand Cherokee Radiator Replacement Cost

Here are highlight of this post for you:

  • how long does it take to fix a coolant leak
  • how to fix a radiator leak with j-b weld
  • how to fix a plastic radiator

How Much Does it Cost to Fix a Radiator Leak (How to Fix a Plastic Radiator)

The radiator is a very important part of the car. Without it, the car cannot function properly. It will become overheated and might get damaged.

Once you start noticing signs that the radiator is faulty, you need to get it fixed as fast as possible.

The main function of the radiator is to cool the engine. So, a radiator leak could lead to damages. It will only get worse if neglected.

A damaged radiator can cause the block of the engine to melt. Repairing this will cost you thousands of dollars.

If your radiator is damaged and you keep driving the car, you risk blown gasket and overheated engine.

Your car will be unable to regulate temperature, making it so unbearable to drive.

How Much Does it Cost to Fix a Radiator Leak

The cost of repairing a radiator is based on various factors. You will need to purchase a radiator hose and water pump.

The hose is sold for about $15 to $50, while the water pump costs about $35 to $75. To replace a radiator, you might have to spend about $200 dollar.

Another cost you need to think of is the labor cost. This depends on the mechanic whose services you are using.

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How long does it take to fix a coolant leak?

Fixing a leak in your coolant can take about twenty minutes or less. What determines the timing is the solution you are applying.

If you notice that your car is not functioning properly as it should, it is possible that your coolant is leaking.

There are so many things that could cause this leak and it is not advisable to continue to use your car until you have found the root cause.

Neglecting the leak and driving your car can lead to damages that will cost you greatly. Fixing a leak is not as expensive as replacing an engine.

If you notice your coolant is leaking, the first thing you need to do is to try and find where and why it is leaking.

Even though it can be fairly difficult, you still need to locate it. It is either you have an internal or an external leak.

Checking for internal leak

To start checking for an internal leak, you need to start checking your car’s interior. To begin, make sure the engine has cooled down. Internal leaks are not easy to detect because they disappear easily.

If your car is suffering from this kind of leak, you will notice white smoke coming out from the exhaust system.

If you cannot see any smoke then, you will need to check for other things. Check your engine closely, taking a look at the head gaskets, engine block, turbos, and valves. Check these components for any type of cracks.

If you notice your oil has a milky brownish color then, the coolant has leaked into the engine oil. If this is the case, you may have lots of problems.

Checking for external leak

To check for an external leak, make sure the engine is not hot. If the engine is cold, you will be able to see if there are any issues.

Then, start by checking the engine. Check under the engine, using a flashlight to see for any sign. To aid your search, you can pressurize the coolant with a tool.

You will have to wait a few hours to do this. If you still cannot find any leak within 24 hours then, there is no internal leak.

Fixing a coolant leak

After you have found the leak, the next thing to do is to fix it. The manual of your repair service should have every detailed instruction on how you can fix a coolant leak.

You need to ensure that you follow every instruction closely. Make sure you know what you are doing so you don’t make any mistakes while fixing it.

Once you are done with repairing, make sure you take your vehicle for a car drive to be sure it is in perfect working condition. The hardest part of fixing a coolant leak is to locate the leak.

How to fix a radiator leak with j-b weld

To repair a radiator with a J-B weld, the first thing you have to do is to make sure your engine has cooled down. Ensure that battery is disconnected.

Then, secure the engine by covering it. After this, drain the radiator. Place a bucket under the radiator to collect its fluid.

Now, you need to clean the place where the leak is. Ensure to remove any debris, dirt, and grease that is present. You can use a solvent or a rag.

Now, bring out the J-B WELD and mix it. Make sure you measure the same part of the red and black tubes for the mixture. Be very fast when mixing.

The next thing to do is to apply the mixture all over the leak. To do this, you need to use a wooden object.

You will have to leave it to set for about 6 hours. Then, in 15 to 24 hours, it will be totally cured.

Now, you can replace the radiator and refill its fluid.  Reconnect your battery and take your vehicle for a drive.

How to fix a plastic radiator

To repair a plastic radiator, first of all, you need to locate the problem. The easiest way to go about this is to run the engine until its temperature is high.

Then, shut it off once its pressure is high so that the coolant will come out from its leak. Once you have discovered it, mark the area with a tape. Now, you need to wait for the tank to cool down.

If the leak is below the coolant level then, you need to drain it so that it appears above. Ensure that you wipe the leak clean and dry it.

Scrub it and wipe it for any debris or dirt. After scrubbing, make sure the place is dry so that you can go on with your repair.

Now, you will use a soldering iron tip against the tie until it melts. This will work as a sealant, and wrap the leak.

Make sure you move slowly to the leak area so that it melts and seals the leak. Continue melting until the areas become hot liquid.


So I hope you have been able to see how long does it take to fix a coolant leak, how much does it cost to fix a radiator leak and even how to fix a plastic radiator?  Please refer to this post for more on how to fix a car radiator.

With this article you should also be to pick or select the top and best radiator repair epoxy on Amazon and the question how to fix a radiator leak with j-b weld was also addressed fully.

It is easy to fix a radiator leak. The only difficult part is locating the leak once it’s been located, you can fix it yourself in no time.

I hope this post on cost of a plastic radiator repair epoxy has helped you, if it did please don’t forget share this post.  

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