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Message: <blockquote data-quote="sakuraguy" data-source="post: 984673" data-attributes="member: 6441">Radiator Leak CausesRadiator leaks often caused by internal corrosion and split seams can be found almost anywhere on a radiator. While the most vulnerable radiator points are typically along the seams and where tubes join the radiator’s headers, leaks can occur in a wide variety of different places.While the most common cause of radiator leaking is due to cooling system neglect or a lack of maintenance, it can also be caused from bad connections, fatigue cracks from vibration, mechanical stress or collision damage. Most types of radiator failure are found where inlet and outlet fittings connect to end tanks, header connections, or where the brackets for radiator support connect to the radiator. Most types of damage resulting from radiator leaks can be repaired if the radiator is in somewhat good condition. If the coolant is testing ok and the radiator is performing to standard, the connections will probably be tested for leaking.A radiator problem called “solder bloom” is actually internal corrosion that can amass when a car owner neglects radiator coolant, fails to maintain or service the radiator, or when rust reacts with the soldered joints in a copper and brass radiator. As these kinds of deposits begin to grow in the radiator, the tubes can become blocked and ultimately restrict the flow of coolant. This kind of radiator problem isn’t as easily fixed and almost always requires that the radiator be re-cored or replaced. The cooling system itself should also be cleaned and flushed to remove any remaining deposits and sediment. If your radiator leaks are caused by small punctures and the radiator is in otherwise healthy condition, the radiator can often be fixed by simply soldering, brazing or even sealing the leak area. If the radiator leaking is severe, found in multiple locations, or full of corrosion, then patching the radiator or its casing is not going to last for long. In this case, the radiator will have to be replaced or at least re-cored.Ordinary radiator leaks will be easy enough to diagnose because you can often see a dripping or spraying of coolant and quickly recognize the location of the split or crack. If you do notice leaking, you’ll want to get the radiator serviced right away as a loss of coolant will lead to engine overheating. If not found and corrected, the leak can cause more and more damage. While there are additives available that can help inhibit leaking, these are most useful on small leaks and even then, sealers are only a temporary radiator fix.</blockquote>

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