![]() ![]() If you continue driving while the engine is overheated, the cylinder heads can warp. Either way, you end up with an overheating engine. When the head gasket isn’t sealed as it should be, hot gases from the exhaust end up in the cooling system, or the coolant can leak into the cylinders. Not only can a head gasket fail because the engine overheats, but it can lead to other problems, too. Even when the parts are upgraded, the acids from the fluids start to eat away at the seal. While the engines contain fabulous weight and balance properties, fluids pool up next to the head gasket instead of draining normally after the engine is turned off. In these engines, the pistons move from side to side. ![]() With a Subaru boxer motor, the engine lays flat instead of standing up like most models. Of course, the boxer engine might also be to blame because of the design. Subaru head gasket problems seem to affect the following models the most: What Models are Affected by Subaru Head Gasket Problems? It turns out that the design of the engines resulted in head gasket trouble. While any engine could endure a head gasket failure, there are some Subaru models that are specifically known for this problem. These 2.5-liter engines came in several configurations and were updated during production a few times. ![]() The Subaru EJ251, EJ252 and EJ253 engines are the most susceptible to head gasket problems due to the composite-style head gaskets. When the head gasket is faulty, oil and coolant start to mix, creating a costly situation. With each operating cycle, the head gasket must absorb and dissipate the heat properly to ensure the seals continue working as they should. The gasket does move slightly as the engine heats up and cools down. However, a faulty head gasket can create problems. The only time it would require replacement is if there were major engine repairs being performed. In most engines, the head gasket will last the lifetime of the vehicle. The head gasket must be precisely placed and secured to ensure that everything is sealed properly. Basically, the gasket ensures that the oil passages and coolant flow remain separate from one another. The purpose of the head gasket is to maintain the appropriate tolerances between these two heavy metal parts. When the motor is put together, the head gasket is placed between the engine block and the cylinder heads. It’s a thin strip of metal that contains holes, resembling a piece of Swiss cheese. The head gasket is located on the engine. Subaru Head Gasket Replacement Cost What is a Head Gasket? ![]()
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