What is the best spark plug gap tool?

Best Spark Plug Gap Tools: Properly Adjust Your Spark Plug Gap

• OEMTOOLS Blade Master. A high-quality feeler gauge with several blades that helps with measuring and adjusting the gap size.
• CTA Tools Spark Plug Gapper. A ramp-type spark plug gap measuring tool with an easy-to-read scale.
• CTA Tools Spark Plug Gap Gauge.

What happens if spark plug gap is too wide?

If the spark plug gap is incorrectly set, it can lead to engine issues. Too small of a gap may give too weak of a spark to complete the combustion process within the engine; too wide of a gap can lead to the spark plug not firing correctly, causing misfires at high speeds.

Can you GAP old spark plugs?

You need a feeler gauge to gap your spark plugs properly. Gap new as well as old spark plugs, even if the package says that the new plugs are “pre-gapped.” To avoid problems, work on only one plug at a time, in cylinder sequence order.

How far off can a spark plug gap be?

The spark plug gap adjustment should not be changed more than 3 times and should not exceed . 008″ in either direction. Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. Also, the spark plug gap should never exceed .

How do you adjust spark plugs?

Adjust them accordingly. Use the tool to adjust the bottom electrode. When you hold the spark plug with the electrodes facing the floor, you’ll want to bend the bottom one very gently either in toward the other electrode if you want to narrow the gap, or out, if you want to increase the gap slightly.

What is plug gap?

When replacing spark plugs, ensuring that the plugs have the proper gap is critical to engine performance. The gap is the distance between the center and side electrodes, set so arcing occurs at the proper voltage that ignites the fuel and generates the combustion that makes the engine run.

What is a spark plug gauge?

A spark plug gap gauge is a disc with a sloping edge, or with round wires of precise diameters. It is used to measure the length of the gap between the ground and central electrodes. The simplest gauges are a collection of keys of various thicknesses which match the desired gaps.