![]() ![]() This problem occurs when the engine is running and when it’s off, but running the engine is more dangerous, since the motor will start overheating.Ī bad head gasket can also cause external coolant leakage and you will see if coolant leaks out between the engine block and the head. The head gasket is responsible for keeping the oil and coolant separated from one another.Īs coolant leaks into the system, it’s no longer able to keep the engine cool. If the coolant has started leaking into the engine oil or combustion chamber, a blown head gasket is the likely cause. RELATED: 6 Symptoms of a Bad Radiator Cap (& Replacement Cost) 4. The radiator could also be cracked or damaged from any external damages like corrosion or stones when traveling at high speeds. Additionally, the coolant reservoir could overflow when you run the engine because of the higher pressure in the hoses. If the cap is damaged, coolant can leak out, leading to lower levels in the radiator. It also helps to regulate the pressure in the radiator. The radiator cap is needed to keep the coolant in the system where it belongs. The heat and constant pressure can increase the wear if left unchecked. As the motor runs, the pressure of the system can either increase the leak or decrease it, depending on where the hole is.Įither way, hoses can become brittle and worn over time, which is why they should be regularly inspected. Damaged HosesĪ broken hose can also cause a leak when the engine is running or not. You might also see leakage under the vehicle around the passenger or driver seat area. If the heater core is bad, you will notice trouble getting heat into the system. The heat that is generated from the system gets blown into the vehicle through the HVAC vents when you activate the heater. Hot coolant gets pumped into the engine through the system’s heater core. Here is some more detailed information on what could cause a coolant leak when the car is running. A bad intake manifold gasket could also be to blame. It’s also possible that there is a bad heater core or a blown head gasket. Always protect yourself with safety glasses and gloves when working with the coolant on your Blazer.Can I Drive With a Coolant Leak? Causes of Coolant Leak While Car is RunningĬoolant leaks when the car is not running can be caused by damaged hoses, a bad radiator cap, a bad radiator, or a defective water pump. An anti-freeze leak can cause the temp sensor to record high engine temperatures in a 2019 Chevrolet Blazer. ![]() If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. This video shows you where the coolant reservoir, hoses and connections on your 2019 Blazer Base are located and the steps needed to fix minor leaks.Ī few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly. Otherwise, your Blazer may have a radiator leak. However, a coolant leak (aka an antifreeze leak) is most likely to occur where the hoses connect to the engine or radiator. Coolant / antifreeze can leak from the reservoir, radiator or any hose, in 2019 Blazer with the 3.6 liter engine. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your Blazer engine and keeps it from overheating. Leaking coolant / antifreeze is one of the more common types of leaking fluid from Blazer engines. Follow the steps in this video to see how to fix minor coolant (antifreeze) leaks in your 2019 Chevrolet Blazer. ![]()
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