Blown Head Gasket
BLOWN HEAD GASKET JUNK CAR BUYER AUSTIN
A head gasket is a gasket that sits between the engine block and cylinder head(s) in an internal combustion engine.The gasket itself is a mechanical seal that prevents leaks between two things joined under compression by filling the space between them. It works similarly to a washer on a bolt. By preventing leaks, you ensure the best compression and you keep coolant from leaking into the engine. The head gasket in the engine has to take both hot and cold temperatures, back and forth, over and over. Cracks and leaks are bound to happen. The head gasket has a tough job and is the weakest link of the chain of parts that keep the combustion engine moving, so it’s more likely to fail than other parts.
If a head gasket leaks or blows, it’s usually not just one event that leads up to it. Either could happen during normal driving. The heat of the engine can gradually wear the gasket down with no major problems ever occurring. Until it leaks or blows, however, it’s hard to know if the head gasket is running out of time. It’s not something you can see looking at the engine; it’s way the heck in there and can’t be accessed without some major disassembly. Other things may signal your head gasket’s cry for help. You may see coolant leak from below the exhaust, you may be losing coolant with no visible leak or noticing bubbles in the radiator or coolant overflow tank. The engine may smoke (this will be white smoke; if not, keep looking because your engine has another problem), the exhaust may smell sweet or the oil may look like a rancid milkshake.
So what to do if you have a head gasket problem? It’s not a cheap repair. Let’s face it, this thing sits inside the engine. If it’s a minor leak, you may be able to seal it with products available like Blue Devil or K-Seal. Talk to a mechanic you trust to determine whether this will do the trick. Using these products could be as simple as pouring it in and letting it move through the works as you drive or may require a drain and flush of the cooling system—either option is far cheaper than replacing the gasket itself. Be forewarned that products like Blue Devil are meant to be permanent. Speaking from personal experience, once it’s sealed, there’s no going back or getting it out or working around it. That’s generally the idea, but sometimes folks look at it as a temporary patch.