Spark Plug Feeler Gauges

Spark Plug Feeler Gauges

Spark plug feeler gauges are precision measuring tools used to determine the gap between the electrodes of a spark plug. The gap between the electrodes is a critical factor in the performance of the spark plug, as it affects the ignition timing and the overall efficiency of the engine. The feeler gauge consists of a set of thin metal blades of varying thicknesses, each marked with the corresponding measurement in thousandths of an inch or millimeters. To use a spark plug feeler gauge, the engine must be turned off and the spark plug removed from the cylinder head. The gauge is then inserted between the electrodes of the spark plug, and the blade that fits snugly between the electrodes is noted. If the gap is too small, the blade will not fit, and if the gap is too large, the blade will slide through easily. The correct gap is achieved by carefully bending the electrode until the correct blade fits snugly. Spark plug feeler gauges are essential tools for anyone who works on engines, from professional mechanics to amateur enthusiasts. They are used to ensure that the spark plugs are properly adjusted, which can improve engine performance, fuel efficiency, and emissions. In addition, they are relatively inexpensive and easy to use, making them a valuable addition to any toolbox. In conclusion, spark plug feeler gauges are precision measuring tools used to determine the gap between the electrodes of a spark plug. They are essential tools for anyone who works on engines, and can improve engine performance, fuel efficiency, and emissions. With their ease of use and relatively low cost, they are a valuable addition to any toolbox.

spark plug, feeler gauge, electrode, ignition timing, engine performance

— Paul Adams