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Sandwiched between the head and the engine block.
A compression test. If you see white smoke from the exhaust that smells sweet, you have a blown head gasket or cracked head or both.
No. I went to the dealer and you have to buy the parts separately.
no
if you need instructions and diagrams, BUY A REPAIR MANUAL FOR 15 BUCKS
Sounds like the head gasket is gone
yes
That isn't likely. Most head gasket failures are caused by overheating. Not changing the oil will cause the motor to sludge up and increase the wear on the internal parts.
the head gasket needs replaced.
Yes
You pull the head off and change the head gasket. There is no treatment for a blow gasket, exept changing it. Its a pretty huge job I would suggest getting it at the garage and get a quote.
Most definitely the ideal answer would be YES! The integrity of the bolt is not the same once it has been torqued appropriately