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Intake Manifold Gasket Leaking

Q: I was having some service work yesterday and was advised that I have an “Intake Manifold Gasket Leaking.” How serious is this and when should it be fixed? This on a Buick Park Avenue with 50000 miles.
Thanks, Bill

A: A leaking intake manifold can be very serious, and if ignored, can result in cross-contamination of engine coolant and engine oil. At each corner of the intake, coolant flows through to aid in cooling the engine, heads, and block. At the front and back of the intake is the sealing area where engine oil is present. If the coolant is leaking externally, it is very possible that the gasket is breeched and leaking internally as well. I would recommend you try to make the repairs as soon as possible to eliminate a more costly situation.

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