Can someone tell me how long a head gasket is good for in a car. I have had to get recovery out because my car wouldn't start. The man said it is not the battery, it was firing on three cylinders and thought it could be the head gasket. I had this done just over four years ago. Could it be the same problem again.. Or could it be just the spark plugs if I'm lucky! My car is a Vauxhall Estate 1997.