what causes a head gasket to blow?
Overheating: Allowing your coolant level to run low can cause damage to your head gasket. When coolant isnât available to pull engine heat from your block and heads, the extra heat can cause expansion on your head gasket, which often results in a blown head gasket.
To start, you need to be able to recognize the signs of a blown head gasket. Your head gasket is a metallic seal that is sandwiched between your engine block and your engineâs head. It keeps your engineâs fluids from leaking and is put under enormous stress during engine operation, thanks to a combination of factors: