As a tight seal between the engine block and cylinder head, it withstands a full range of pressure and heat, so one day, you may find a leaking or cracking head gasket, which leads to a ‘blown head gasket’.
The symptoms of a blown head gasket are usually not so obvious, so it can be hard to know at first. Here are the most common signs that your head gasket is broken.
White Smoke
White smoke from the exhaust pipe is a warning sign of a blown head gasket. White smoke indicates that coolant leaked out into the combustion chamber. If you see blue smoke from the exhaust pipe, it suggests that oil has entered the combustion chamber.
Overheating
Overheating is one of the indicators that your head gasket may have failed. It is usually caused by a lack of coolant or an oil leakage into your coolant system. When any of these two happened, it slows your engine’s ability to cool off, thereby causing overheating and blowing a head gasket.
Discolored Oil
Discolored engine oil is one of the most subtle symptoms of a broken head gasket. Your head gasket has the job of sealing in the coolant and oil, so if it stops working, it can lead to your coolant and oil mixing. If you see milky coloration in the oil, that indicates coolant mixing with the oil.
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