If you're referring to the water pump gasket, and, if you're changing a faulty water pump, a gasket should come with it and also needs to be changed (Use the grey Permatex gasket sealant on the new gasket). If you're referring to the head gasket - not necessarily.
The head gasket has blown and needs to be replaced.
that is a bad head gasket or blown head gasket the engine needs to be repair
a blown head gasket needs to be replaced as early as possable. it will only get worse and additives like water glass, etc will gradually worsen the problem.
If your gasket has blown and overheating occured then skimming will almost certainly be needed. Send it for testing and skimming better to be safe than sorry.
You have either a blown head gasket or a cracked head. Serious engine dame will occur if this is not repaired. Do not drive the vehicle in until it is repaired. If you have an oil cooler line in the radiator, it could be the radiator. Otherwise, it's probably a head gasket.
check your oil to see if you have coolant in it. if you do your intake gasket needs changed.
battery is dead, alternator is blown, needs new distributor, blown engine, head gasket is out, could be a number of things, take it in to a mechanic
A thermostat gasket is a gasket for a thermostat, a head gasket is a head gasket. The top part of the engine needs to be disassembled to repair the head gasket. You can find information on your specific car in your local library. You may even be able to access this online if the library has the databases available.
You may have a blown head gasket. This needs to be repaired before you drive the vehicle or you can blow your engine.
A blown head gasket is usually caused by over filling the oil during an oil change, or just the opposite not having enough oil to compensate the pressure status, therefor causing exstreme overheating which in turn will cause many problems other than just a blown gasket. ie; engine locks up, overheats ,and then is all around just needs replacing. Once you've blown your engine you basically have hit bottom. Hope this helps. It can also be caused by detonation. Especially if you add turbo or supercharger aftermarket.
Reasons your 1999 Honda Accord is overheating can include a leak in the water hose, a blown head gasket, or the radiator cap needs to be replaced.
Isolate which gasket needs changed first, it's either the pump gasket, input, tailshaft, pan, detent o-ring or stick o-ring most likely.