If you are thinking that how to change a head gasket is very difficult then you are wrong. It depends on the type of engine you have. You will need a well-stocked tool box that should include wrench. Car engines tools must be a good choice of metric tools.

Here is the method for How to change a head gasket

First You will have to drain and recycle the engine oil and coolant. It is preferable to run the engine while draining, so that the piston in the cylinder number one is at top dead center of compression stroke. At this point, take note of the position of the rotor and distributor brands to match the level necessary to enable it to be realingned when you got back into the engine.

Older American made V8 engines generally require removing the intake manifold, exhaust manifolds, distributor and ignition wiring harnesses. If you replace the head gasket on an engine with double overhead cams, the situiation is complicated by the need to remove supply chain covers, cams and chains. Note their position and place it as it is after completing the head gasket removal. Multiple cylinder head bolts must be removed to reverse the installation and the sequence of torque to avoid warping and possible cracks. This is particularly important when it comes to aluminum parts. The cylinder head bolts must be tightened and locked in a specific sequence and specifications according to the book of Manufaturer.

The best advice would be to obtain a service manual for the vehicle you intend to use. Most aftermarket parts stock or can order it for you. In the manual, you usually find step by step instructions that are specific to the engine / vehicle you are servicing. Before attempting a replacement gasket you should consider what else could be done. As it requires removing the header exhaust, intake and cylinder head from your car, you might want to see what other work must be done simultaneously.