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Where are the spark plugs located on a 1997 Oldsmobile Achieva SL?

The spark plugs on a 1997 Oldsmobile Achieva SL (assuming it has the common 2.4L Quad 4 engine) are located on the top of the engine, under a plastic cover. To access them, you'll need to:

1. Locate the plastic engine cover: This is a large piece of plastic covering the top of the engine.

2. Remove the engine cover: There are usually clips or fasteners holding it in place.

3. Locate the spark plug wires: These are the wires leading from the distributor cap (if equipped; some variations might have coil-on-plug) to the spark plugs. Following these will lead you to the plugs themselves. They're usually in a fairly straightforward arrangement.

Important Note: A 1997 Achieva *could* have a different engine (though less likely). If it's not the standard 2.4L, the location might vary slightly. Consult a repair manual specific to your vehicle's VIN and engine code for the most accurate information. A Haynes or Chilton manual would be a good resource.