What is the Spark plug gap 1985 buick regal?

The spark plug gap for a 1985 Buick Regal depends on the engine it has. Buicks of that year came with several different engines (V6s and a V8). You must consult your owner's manual to find the correct gap for your specific engine.

Without knowing the engine size (e.g., 3.0L V6, 3.8L V6, 4.1L V8, etc.), I cannot give you the correct spark plug gap. The gap is critical for proper engine performance and can affect starting, fuel economy, and emissions. Using an incorrect gap can damage your engine.