If you are asking what causes a blown head gasket it’s probably for one of two reasons; you found out your have a blown head gasket on your vehicle, or you have a vehicle known for getting blown head gaskets and want to try and avoid having one in the future. This article will address both of those concerns, but first we will talk a little bit about what a head gasket does and how it might fail.
Any gasket in your vehicle’s engine, or any machine for that matter is designed to accomplish a relatively simple goal. When two parts of a machine or device come together an you want to keep a fluid or a gas either in or out you need a gasket to help. For example, if you go open the front door to your home there likely will be some weather stripping all around the door jamb where the door will meet it when it’s closed. The weather stripping is really a gasket designed to keep the outside air out, and your conditioned comfortable and clean air in your home. The gaskets in your vehicle’s engine serve the same purpose of keeping air, or a fluid like coolant or oil where it should be at the joint of two parts of the engine. In the case of the head gasket, it has the job of keeping intake air and combustion gases in the cylinder and coolant out of the cylinder in the water jacket of the block and head.
So, what causes a blown head gasket? Well, a head gasket can blow, or fail in a few different ways from a few different causes. The reality is the head gasket has to hold back all the pressure of the intake vacuum and combustion explosion while keeping the engine coolant out during an extreme range of temperatures and it has to do it mile after mile. The other difficultly is that due to the design of the cylinder heads, the position of the cylinders, valves and any other equipment in the head, there can only be a small number of bolts securing the cylinder head to the block and keeping the head gasket flat and sealed. This relatively small number of bolts can cause uneven pressure and stresses on the head and head gasket as it expands due to heat and other stresses.
For all the reasons it can be difficult to tell exactly why your head gasket has blown. It is possible that normal driving can cause a head gasket failure due to the factors above. Besides normal driving, it seems the most common cause of a blown head gasket is an overheating engine. The excess heat will cause the engine block and head to expand more than usual and can exploit a weakness in the head gasket causing a failure. If you are looking to prevent a head gasket failure in your vehicle keeping your engine coolant at the proper level with the proper mixture and changing it as often as the manufacturer recommends is the best way to avoid a head gasket failure. You can also ensure your water pump is working properly by regularly listening for noises and observing the water pump pulley at the front of your engine to make sure it isn’t wobbling or loose. If you drive a car equipped with a super or turbo charger you can also keep a close eye on the amount of boost they are creating. If your engine experiences higher than usual boost levels, it can create higher than normal cylinder pressures which also can cause a head gasket to fail. One last way of keeping your head gasket from failing is not proven and may only help minimally, but avoiding down shifting in a car with a manual transmission may help extend the life of your head gasket. While downshifting can help save your brakes it can put pressure on your cylinder head as your engine increases RPM while slowing your vehicle down.
Trying all these things can help prevent premature head gasket failure, but if you already have a blown head gasket you may not be in as much trouble as you thought. Replacing the head gasket can be a very expensive proposition but replacement may not be necessary to fix your problem. BlueDevil Head Gasket Sealer can repair your blown head gasket permanently sealing your leak and giving your vehicle with new life without the high repair bill. BlueDevil Head Gasket Sealer contains no particulates that can harm your engine and is safe and easy to use.
Click the link for more information about BlueDevil Head Gasket Sealer.
You can pick up BlueDevil Head Gasket Sealer at our partnering local auto parts stores like:
- Pep Boys
- O’Reilly Auto Parts
- Car Quest Auto Parts
- Bennett Auto Supply
- Advanced Auto parts
- Prime Automotive Warehouse
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