Maybe, maybe not. We know nothing about the car in question to make such a judgment.
That depends entirely on how much you value the car.
A few things you have to look at- How old is the car? Except for the bad head gasket, does the car operate OK? How many miles are on the car?? These are things you have to decide what you will do.
If this is a nice car then spend the money and have the blown head gasket repaired before you try to sell it. With a blown head gasket it is only worth what someone will pay. Would you buy a car with a blown head gasket? I sure would not, as there is no way of knowing how much damage has been done. I would not touch this car as it stands now and neither will most people. It is worth very little with the gasket blown.
Because the head gasket is blown.
Yes, a busted head gasket might stall your car if the gasket causes the car to overheat. This can actually blow the heads and cripple the car completely.
You have a blown head gasket or a cracked head. STOP driving this car immediately or you will do serious damage to the engine. It will need the gasket replaced and the head checked.You have a blown head gasket or a cracked head. STOP driving this car immediately or you will do serious damage to the engine. It will need the gasket replaced and the head checked.
a seal (i.e seal) between the cylinder and the head on a car
A head gasket joins that cylinder head with the cylinder block. It separated the oil and the coolant passages. If the two mix, the head gasket will "blow" soon.
No. You can have the head gasket replaced. This is unless you kept driving the car with a blown head gasket and have totally destroyed the engine.
should you drain oil in the car if the head gasket is blow
Neither. Have a new head gasket installed. That is assuming you did not completely ruin the engine by continuing to drive it after the head gasket blew. If you did indeed ruin this engine, then the decision should be based on what the car is worth in the first place.
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.