This is the leading cause of antifreeze leaks.Īs the radiator gets old, its tubes grow weaker. For instance, corrosion in the radiator will cause the formation of holes. As you use your car, you can’t prevent corrosion in some engine parts because of the water in its cooling system.Īntifreeze leaking will occur in metal parts of the engine’s cooling system that has already corroded due to long use and improper maintenance. This is why engines are built strong to withstand extreme temperatures while running. Hole in the RadiatorĮvery time you run the engine, it produces and receives too much heat. However, if this heater core is malfunctioning, most likely, the coolant will leak underneath the passenger seat of your car. This is what happens each time you turn on your car’s heater. When the heater core pumps the hot coolant to the engine, the heat produced is blown into the car through the ventilation system. Here are some of the most common reasons for this problem: 1. So, if there is an antifreeze leak, it could be due to a problem in one of these components. Possible Causes of Antifreeze LeakĪs I have already mentioned, your car’s cooling system consists of several components. If you see any collection of liquid dripping somewhere, it could have flowed out from any part of the cooling system. You need to trace the flow of that liquid to find the source of the leak. You need to look for puddles of liquid underneath your car. There is a way you can determine where the leak is coming from. When you turn the heater off, the coolant tends to sit in the heater core and will only be pumped back out into the primary cooling system when you turn on the ignition and the heater on. The antifreeze tends to leak from a damaged heated core when turning the engine off. It could also be a simple torn hose or a faulty radiator cap. Perhaps the radiator has gone bad, or it could be a damaged head gasket or broken water pump. If your car was leaking antifreeze when you parked it, it could be that there is a bad component in the car’s cooling system. Car Leaking Antifreeze When Parked Bad Component in the Car’s Cooling System Read on to learn more about the leaking antifreeze when your car is parked, its causes, and fixes. When you switch off the ignition, fluid leaks from a damaged heater core because the coolant tends to sit in it when the heating is turned off, the fluid only pumps back out into the primary cooling system if you turn on the engine and you switch on the heating again. There might be a torn hose, bad radiator cap, damaged head gasket or water pump, or even a damaged radiator. One of the most common causes of leaking antifreeze is damaged components in your car’s cooling system. This article will discuss car leaking antifreeze when parked – causes and how to fix it.Įven if your car is parked, its engine coolant can still leak. This lack of antifreeze might be due to a leak. If your car does not have the right amount of antifreeze, its engine can overheat during summer or freeze during winter.
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