![]() Lastly, before we start explaining how to find an external leak, if you do find that it’s a cracked hose, it would be a good idea to replace your radiator cap too. Because of that, it’s a good idea to glance over the rest of the causes and their symptoms to make sure it’s not something different. Furthermore, the chances are high that the coolant will leak or drip onto a hot part of the engine and evaporate almost instantly, leaving little to no traces behind.Īlso, an external leak doesn’t show symptoms besides missing coolant and possible wet spots. The first problem is that a crack in the expansion tank or some of the hoses starts leaking only when the engine is hot, and the cracks expand. Unfortunately, most of the time, it’s not that simple. If you do that and you find where the leak is coming from, great, consider yourself lucky. With external coolant leaks, it’s apparent that you should first look for obvious signs of leaking, like a wet spot under the car or a wet engine. Now, since in the vast majority of cases, a leaking coolant is down to cracked hoses or the expansion tank, that’s what we will start with. Each of these causes has distinct symptoms and ways to fix them, so stick around. The other two are a faulty head gasket or a leaking heater core. ![]() The two cheaper possible causes are a bad expansion tank/radiator cap or an external leak such as cracked hoses. Well, four main reasons that might be two are very expensive to fix, and the other two are relatively cheap. So, “my car is leaking water but is not overheating,” you say. ![]()
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