This usually happens when there’s a crack in your engine’s head gasket. An internal coolant leak means that there’s a leak inside your engine causing you to lose coolant fluid. If you can’t find any fluid leak externally, you may have an internal coolant leak. It’s a small component, but it plays an important role in the cooling system. C) Check The Radiator Capįinally, the radiator cap may be the culprit of your coolant leak. See if there is any coolant leaking out of these hoses. Much like the reservoir hose, they will wear down over time and develop cracks, and won’t seal properly. If you see a leak or stains on your radiator, then you have a radiator leak.Īdditionally, check the hoses connected to the radiator. These stains indicate a leak that has dried out. Also, look out for white deposits or rust-colored stains. See if any leaks are coming from the radiator. Over time, the insides of the radiator will corrode and debris can cause damage which ultimately causes a leak. If the reservoir tank is fine, the next thing you should check is the radiator itself. In which case you will need to replace them. If you see a crack or if the connection is loose, then it can leak coolant out. These rubber hoses may wear down as well over time which can either create a crack or loosen the connection. If you don’t see any cracks on the tank, then check the bleed hose that connects the reservoir tank to the radiator. Inspect your coolant reservoir tank for cracks that can cause a coolant leak. Over time, this may wear down the plastic and create cracks. Because of this, the reservoir tank, sometimes called the expansion tank, experiences a lot of temperature changes. When the engine is turned off and pressure in the system goes down, the coolant is then transferred back into the radiator. The reservoir is there to store hot coolant when your engine is operational and pressure is high within your cooling system. These are the three things you should check: Now that you’ve confirmed that there’s an external leak, now it’s time to identify where the leak is coming from. Keep in mind that there are red coolants as well, so be sure to check what coolant your car has been using. Coolants are usually green in color, so if you see a puddle of green fluid underneath your car, then you have an external coolant leak. Afterward, wait for 15 minutes and see if there’s a puddle of coolant underneath your car. After driving your car, park and turn off your car. It should be quite easy to check if your car has an external leak. This is how you check for a coolant leak: 1. If this is the case, then you will need to identify where the leak is happening. Afterward, if you notice the temperature rises again and the coolant level is already low again, then there’s a leak in your cooling system. Once you refill it, try running the car again. If the coolant comes premixed, then you won’t need to mix it with water. Keep in mind that some coolant comes premixed, so be sure to check it before you refill it. If the coolant level is low, refill it with a 50-50 mixture of coolant and water. Instead, your problem may lie with either the water pump or the thermostat, but we will discuss this further later. If it does, then you don’t have a coolant leak. Once your car has cooled down, open the reservoir cap and see if the coolant inside the tank reaches the ‘Maximum’ indicator. To do this, locate your car’s coolant reservoir tank, which is a plastic container with a cap on top. If your engine is overheating, then we recommend checking your coolant level first to determine the problem. If you want to learn more about how your vehicle’s cooling system works, watch the video below:Įngine Overheating: Causes, Symptoms, & How To Fix it How To Find A Coolant Leak Over time, this will cause severe and very expensive damage to your engine. If you continue to drive, your engine will overheat and break down the components inside. At this point, you should pull over and stop driving since there’s not enough coolant to extract the heat from your engine components. When this happens, you will see your temperature gauge rise above 240☏. Without coolant, your car won’t be able to cool the engine as nothing will extract the heat. Most cars will operate with their coolant temperature (shown by the temperature gauge on your dashboard) between 180☏ to 240☏. The coolant will carry the heat away from various engine components and keep it at its optimal operating temperature. Running a car without sufficient coolant can lead to severe and expensive damage to your engine.Ī coolant works by circulating through your engine and extracting heat. This is often caused by a coolant leak in your car’s cooling system, which you will need to address immediately. More often than not, the problem stems from a lack of coolant. If you’re driving along and notice your engine’s temperature is rising, then you have an engine cooling issue.
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