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How do you find the freeze plugs on a 1985 Buick Century?

Freeze plugs, also known as core plugs, on a 1985 Buick Century (and most cars of that era) are generally located on the engine block itself, usually towards the bottom. They're not always easy to see, as they're often recessed and covered in grime. You'll need to get underneath the car to find them.

Here's how to find them:

* Clean the engine block: This is crucial. Use a degreaser, engine cleaner, and a stiff brush or pressure washer to thoroughly clean the bottom of the engine block. This will make the freeze plugs much easier to see. Be careful not to damage any wires or sensors.

* Consult a repair manual: A shop manual specific to your 1985 Buick Century will show the exact location and number of freeze plugs. This is the best way to ensure you find them all. The manual will often have diagrams.

* Typical locations: They are often found:

* Behind the timing chain cover (if applicable): Partially visible after removing the cover.

* On the sides of the engine block: Look along the lower sides, often near the oil pan.

* On the end of the engine block (front or rear): Sometimes towards the transmission.

* Visual Inspection: Once the engine is clean, carefully inspect the block's lower surfaces. Freeze plugs are usually circular and slightly recessed. They will often look slightly different in texture or color than the surrounding metal.

* Feel for them: If you can't see them clearly, carefully run your hand along the lower surfaces of the engine block. You should be able to feel the slightly recessed surfaces of the freeze plugs.

Important Safety Note: Before working underneath your car, make sure it's securely supported on jack stands, not just a jack. Never work under a car supported only by a jack. Always wear safety glasses.

If after thorough cleaning and inspection you still can't locate them all, a mechanic specializing in older vehicles will be able to help. They'll have experience with this specific engine and can pinpoint their location quickly.

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