From Kart Wiki
- The spark plug provides the spark that ignites the Air/Fuel charge in the combustion chamber of the engine.
- In most 100cc Kart engines the most common plugs to use the NGK B10EG & B9EG or variations of this. The higher the number the coolers the plug will run. A B10EG tends to be what most F100 type engine will run, very rarely on a very cold day would you use a B9EG. Using too hot a plug can cause engine damage.
- Other types of engine use different spark plugs.