Because the head gasket is blown.
Sure it will start with a blown head gasket. But, if you continue to run this engine with a blown head gasket you will destroy the engine.
Remove the cylinder head and replace the gasket. -Possibly even have the head skimmed.
what are you asking here? PLease be more specific ...like - how do I know if my head gasket is blown, or what do I do about a blown head gasket ......
Blown head gasket.
It can if the cylinder fills with coolant.
usually not....the engine will start, but will run rough and/or overheat
No it will not. The only thing that will fix a blown head gasket is to replace the gasket.
Yes it would.
You have a blown head gasket.
Loss of power and hard to start.
There are several possible indications of a blown head gasket: If the head gasket is blown between adjacent cylinders there will be poor or no compression in either cylinder. Poor compression in any cylinder can be caused by a blown head gasket. That condition can also be caused by a burned valve or piston. Coolant in the crank case can be caused by a blown head gasket. Compression in the coolant can be caused by a blown head gasket. An engine with a blown head gasket usually loses performance and runs poorly or not at all.