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How to Replace the Intake Manifold Gaskets on a 3.5 Intrigue

by Jericho McCune

The Oldsmobile Intrigue was a midsize sedan that was produced with a 3.5-liter or 3.8-liter engine. The 3.5-liter engine was first introduced in 1999 and became standard from 2000 until the Intrigue was retired in 2002.

The intake manifold has a number of chambers that the engine coolant flows through to keep the engine cool. The gasket is in place to prevent the fluid from spreading in places it shouldn't. When the gasket is damaged, it can cause the engine to heat prematurely and become damaged.

Park the vehicle on a flat surface and set the parking brake. Open the hood and secure it in place with the hood prop.

Disconnect the spark plug wires from the top of the distributor cap. Remove the distributor cap retaining bolt with a socket wrench. Remove the distributor cap.

Loosen the hose clamps on the upper radiator hose and water pump. Pull the hoses free from the intake manifold.

Remove the bolts holding the manifold in place with a socket wrench. Remove the manifold.

Peel the old manifold gaskets from the engine. If they are stuck, use a flathead screwdriver to pry them free.

Spray the new gaskets with gasket sealer and put them in place.

Set the intake manifold on top of the gaskets and tighten the retaining bolts with a socket wrench.

Attach the radiator and water pump hoses to the intake manifold and tighten the hose clamps with a flathead screwdriver.

Attach the distributor cap to the top of the manifold. Replace the retaining bolt and tighten it with a socket wrench. Replace the spark plug wires.

Items you will need

References

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