Gaskets secure the gap between the intake manifold and engine, preventing air and coolant from leaking out.
and the
The rubber seal keeps coolant from spilling out and prevents contaminants from entering the combustion chamber.
Image Source: Giphy
However, intake manifold gaskets
Intense heat and pressure in the engine can cause gaskets to crack.
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Coolant can leak out of a cracked gasket and cause the engine to overheat.
Image Source: Giphy
Image Source: Giphy
Image Source: Giphy
Some symptoms can indicate issues with other parts.