While only a professional can determine the exact cause, you can suspect a blown head gasket from the following symptoms. Manufacturing defect (the Subaru head gasket repair crisis in the 1990s is the perfect example).In most cases, your problem is the result of one of these issues: Several sequences can lead to a head gasket failure. ![]() If you notice any of these symptoms, you can further confirm a head gasket leak with a coolant pressure tester kit or a head gasket leak tester. Note that bubbling in the reservoir can also signify a bad radiator cap. The air is caused by combustion gases exiting the coolant system.Īnd this could be a result of a blown head gasket. If you notice bubbling inside the coolant reservoir or radiator, it indicates air in your system. Wet Spark PlugĪ bad head gasket can cause the coolant, oil, or gas to get into the cylinders. This happens when a blown gasket causes the engine coolant to come in contact with and contaminates the engine oil. The underside of your car’s oil reservoir cap will likely be splattered with the milky oil. Tan or milky colors in your engine oil are indicators that you may have a blown gasket. If your cylinder head gasket is damaged, the coolant in the coolant passage may work its way into the engine.ĭuring such an event, you would see white smoke or water vapor from your exhaust pipe or exhaust manifold. Without a flat surface, you may have a head gasket failure. A broken head bolt can also damage this surface. Warped Engine Block Or Cylinder HeadĪ warped engine block or cylinder head can interrupt the flat surface required to create a seal in the head gasket. And if any of these factors are slightly off, you could get pre-ignition or an engine misfire. The exact amount of air and fuel mix is ignited by the spark at a specific time.Ī blown head gasket could affect more than one of these factors. Engine Misfiringįor an engine to work correctly, air, spark, and fuel must consistently work together with precision. Removing the radiator cap and checking the engine coolant when your car is overheating can also harm your car. So turn your vehicle off until you can determine the source of the issue. Overheating can cause serious engine damage. If your head gasket blows, even slightly, the engine won’t be able to cool itself down to acceptable driving levels. This could indicate that your head gasket is no longer properly sealing. ![]() You may notice a coolant or oil leak on or around your engine head, engine block, and other cooling system components. Here are the eight common symptoms that can help you confirm if your head gasket is blown: 1. Let’s see what the signs of a blown head gasket are. It keeps coolant in the coolant passage, preventing coolant from flowing into the combustion chamber.Ī head gasket leak could cause engine overheating and poor engine performance, eventually leading to your car shutting down. The head gasket seals the combustion gases within the cylinder. A head gasket is a reinforced material that seals the connection between the engine block and the cylinder head.
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