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Rich Dad River
Do car radiator leaks just happen? According to the National Automotive Radiator Repair Association (NARRA), they do. NARRA studies suggest that leaks have more to do with age than mileage. This is the reason changing your vehicle's coolant annually is such a good idea.
Although many external factors can cause a leak, such as impact, road salts, and chemical reactions, the most common breakdown happens inside the core itself. When your car's anti-freeze gets old or overly diluted with water it cannot do its job lubricating and inhibiting corrosion. This problem is easy to recognize when the coolant fluid becomes discolored.
There are multiple warning signs indicating that your vehicle has a leak. The two most obvious signs are puddles of coolant under your car or truck, or an ongoing low fluid level condition. You'll recognize the puddle under your car as radiator fluid by the bright, neon green color. Another sign that might not be as obvious is an unusual odor inside the car. It will be an annoyingly sweet smell.
Once you realize that your vehicle has a leak, the next step is to determine the location. The most common failure points are the radiator tanks, cooling and heating system hoses, petcock (drain valve), and the thermostat. If the smell inside your vehicle is exceptionally strong it is also possible that you have a heater core issue.
The best way to find a drip in the cooling system is to start your car, lift your hood and inspect with a flashlight. Be careful to stay clear of moving parts. Check the bottom hoses first, as this is very common.
If the issue is a hose you're in luck. This is a very easy repair. Your local auto parts store will typically have the hose and new clamps for less than $25. You'll also need a gallon of anti-freeze to refill the system after you replace the hose.
If the leak is in your radiator, you might be able to apply a "cold weld" temporary fix using an epoxy cement. The most popular product on the market for this is J-B WELD. It's a two part epoxy that's been around for decades. It offers a safe and reliable repair in engine compartments up to 500° F. It's super strong and impervious to water, petroleum chemicals and acids. WARNING: It does not work on plastic (such as the plastic coolant tanks that are now common on most cars), but it works great on aluminum core or copper core cooling fins. Best of all, it only takes 2-3 hours to fully cure.
If you use a temporary "cold weld" repair on your cooling system, you should also consider using a low pressure cap. A cap with an overflow release less than 10 lbs per square inch is ideal. If you don't do this, and the engine gets overly warm, you risk blowing out your repair.
Although a quick fix might seem like the solution, ideally you should replace the faulty component with a new or quality aftermarket part. Your cooling system works hard and the last thing you want is to be stranded, when you least expect it, far from home. In most cases, you can replace a radiator, hoses, clamps and coolant yourself, at home, for less than $250.
Avoid cost repairs to your car's cooling system by maintaining the coolant annually and checking your hoses regularly. It's smart maintenance that will save you time and money.
How to Fix a Car Radiator Leak?
Having a basic knowledge about the location and function of a radiator will help you in fixing a car radiator leak within no time. For temporary fixing, many people prefer using ground black pepper and duct tape to repair the leakage. Nevertheless, you can also find a car radiator leak sealant, which is specifically meant for fixing radiator leakage. Depending upon the model of your car and whether the radiator is made up of copper or aluminum, you will find different radiator sealants. Read more on car parts.
The first thing to do for a car radiator leak repair is to detect the leak spot. Check for hole and/or puddle deposits in the radiator. An easy approach is to wash the hose and the radiator with water and then look for leakage signs. In case, you cannot locate the radiator leak this way, consider removing the radiator to check for leaks. You can dip the radiator in a tub filled with water and see if there are any air bubbles escaping from the radiator.
The next step after locating the radiator leak is to patch up the leak. In case of leakage in the hose pipe, use duct tape to fix the problem. If the leak is in the radiator itself, then use the car radiator leak sealant, as per the directions provided in the kit. For using pepper, open the radiator cap and pour 1-2 teaspoons of ground pepper powder. Pepper powder is a good sealant, which automatically lodges into the leaks. And after coming in contact with water, pepper swells up, thus fixing the leaks properly.
Once you have used the sealant or pepper powder, add coolant up to the correct level. Then close the cap of the radiator and check again for radiator leaks. If there is any, proceed with the above mentioned steps again until there are no signs of radiator leaks. So, you have successfully repaired radiator leaks. But, it is to be borne in mind that this is a temporary solution and you need to contact a professional mechanic as soon as possible.
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Posted in: Repairs
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