What are the symptoms of cylinder head failure?

What are the symptoms of cylinder head failure?

             The symptoms of cylinder head failure are varied – it's important for drivers to recognize them early so any damage can be limited. If a cylinder head fails, it can break the engine (and by extension the vehicle).
             Due to constantly changing temperatures and high-pressure conditions, the head must be strong enough to withstand the demands placed on it without cracking or breaking. It is a complex and important part of the engine and the vehicle as a whole, which means that any problem it may develop should be fixed as soon as possible.