What is the spark plug wiring order on a 1987 Buick Electra Limited?

The firing order for a 1987 Buick Electra Limited with a 3.8L V6 engine is 1-6-5-4-3-2. However, it's crucial to verify this with your specific vehicle's information. The firing order might vary slightly depending on the exact engine code (check your engine bay or owner's manual).

To be absolutely certain:

1. Check your owner's manual: This is the most reliable source.

2. Look for a sticker under the hood: Many vehicles have a sticker detailing engine specifications, including firing order.

3. Consult a repair manual specific to your vehicle's year and engine: A Haynes or Chilton manual will have this information.

Don't rely solely on generic information online. Incorrect wiring can damage your engine.