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.
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 ......
Besides water in the oil, you will have little to no compression on the cylinder(s) in the area where the gasket is blown.
You may not see anything on the gasket. Usually a head gasket "blows" because of overheating that causes the head to warp. A gasket can be bad but there should be a visable break very often in the ring around the cylinder.
perform a pressure test on the cylinders. if they don't hold pressure it's a blown head gasket
my head gasket was blown and it had water in the oil which made the oil look a milky color
I usually hook up a pressure tester to the radiator for about 20 minutes or so...pull the spark plugs out then crank over the motor. If the head gasket is blown then antifreeze will usually have gotten into the cylinder that has the blown section of the head gasket. When you crank over the engine then antifreeze will squirt out of the cylinder with the antifreeze in it. Also smell the exhaust.. can you smell antifreeze in the exhaust. Is there white smoke coming out of the tailpipe ? That is also a sign of a bad head gasket. Finally. Does the car overheat after a short period of driving ? Yet another sign of a bad head gasket.
If you see a lot of white smoke coming out of the muffler , that is the sign.
ckeck the oil dipstick if the oil has a color like chocolate milk the oil has water/colant in it which means the head gasket is blown and its leakin water into the engine block
Do a compression test.
If you have a blown head gasket. you pour it in the radiator and it's suppose to fix your blown head gasket. I've never used it so i don't know if it actually works
They don't work and are only an emergency repair. If you have a blown head gasket the only way to repair it is to replace it.