Engine is overheating ,radiator is bubbling, and white smoke from my rear head. blown gasket? or cracked head. and what is the best stuff to use to fix blown gaskets

maybe bad head gasket causing bubbling in over flow tank
if level is going down you might see white smoke from tail pipe,
wet spark plugs or engine oil looking like coffee.
hope this helps

Usually white smoke from the exhaust means that there is radiator coolant leaking into one or more cylinders. Blue smoke is normally from burnt engine oil. Check your coolant level and you will probably find it is down below the full mark.

Have a leak down test done on all cylinders and this will show up a leak in the combustion chamber(s). You will also likely have combustion gasses leaking into the coolant passages and that can cause some overheating of the coolant. If you see bubbles in the coolant , once the engine has warmed up so the coolant begins flowing through the radiator, then you have a compression leak into the cooling system and in that event you will also have coolant escaping into a cylinder or cylinders and producing white smoke.

Coolant leaking into the cylinders will be via a blown head gasket or a crack in the cylinder head or both. If you have run the engine in an overheated condition this will certainly produce a damaged head gasket and possibly damage to the cylinder heads as well.

White smoke may indicate an internal coolant leak or low coolant reservoir levels. Coolant leaks can also leak into the oil of your car causing it to be frothy or milky looking smoke. You might have a cracked head gasket, engine block, or cylinder head which are all caused by overheating.

Hi there:
Pay attention. here is the most common symptoms a Blown Head Gasket are:
- Your car is overheating. You know it's not the Fan or Thermostat.
- White Smoke is coming out of the tail-pipe and it smells like Anti-Freeze being cooked.
- The car won't start:
* You have already verified it's not an Ignition System problem because you have Spark coming out at all of the Spark Plug Wires.
* You know it's not a Lack of Fuel, because you have verified that the Fuel Pump is delivering Fuel to the Fuel Injectors.
- The Engine Oil is thick and tan to off-white color.



Hope this helps.

Blown head gasket or cracked head. I'll guess this happened after overheating the engine. The compression of the affected cylinder will blow coolant out of the radiator and coolant in the cylinder burning shows up as white smoke in the exhaust.

The sure sign of a blown head gasket is that white smoke along with a loss of coolant with no apparent leak. It overheated, you have white smoke, and if you are loosing coolant you for sure have a blown gasket, cracked head, or both. A compression test will verify a blown gasket or cracked head. I suspect you are on the right track and know what has to be done.

Typical symptoms of a blown headgasket may include: -bubbles of air coming up into your radiator (remove cap before starting) -leaking radiator -milkshake colored oil -overheating -rough running -coolant or oil running from head -spark plug(s) that have a green tint (if green coolant). -white colored or sweet smelling exhaust, white smoke of your tail pipe, or loosing coolant through your overflow

STOP driving this car immediately. White smoke is a sign of coolant entering the combustion chamber. Possibly a blown head gasket or a cracked head. Serious engine damage will occur if you continue to drive this car. It must be repaired immediately. The head will have to be removed. But first make sure that is the problem. A compression test will verify this. You should be loosing coolant with no apparent leak.

if thats the case you should have water in the oil also, that means you have a blown head gasket

sounds like you have a blown head gasket.
be sure engine is cold, open water tank be sure it is full than start car with tank open see if you see bubbles in the tank. If so possible head gasket blown.