tenningsgapet

Tenningsgapet is the distance between the electrodes of a spark plug and is a key parameter in the ignition system of spark-ignition engines. It is specified by the engine or spark plug manufacturer and affects how easily a spark forms to ignite the air-fuel mixture. The gap influences combustion stability, fuel efficiency and emissions, and must be set to the recommended value for reliable operation.

If tenningsgapet is too small, the spark can occur easily but may be insufficient under high load or lean conditions, potentially causing misfires. If the gap is too large, the ignition system must generate a higher voltage to bridge the gap, which can strain ignition components and increase the risk of misfires during cold starts or under heavy load. Setting the gap to the manufacturer’s specification helps ensure reliable ignition across operating conditions.

Measurement and adjustment are typically done with a spark plug gap gauge. After removing a plug, place the gauge between the center and ground electrodes to check the gap. If adjustment is needed, carefully bend the ground electrode with a proper tool or replace the plug with one that has the correct gap. Avoid forcing the gap beyond the plug’s design, and ensure tools and plugs are clean to prevent damage to the electrodes or ignition coil.

Typical ranges vary by engine and plug type. For most gasoline engines, gaps commonly lie around 0.7–1.0 mm (0.028–0.040 in); high-performance engines may use 1.0–1.5 mm (0.040–0.060 in). Always follow manufacturer specifications, as they depend on plug design, engine tuning and operating conditions. Regular checks are part of routine maintenance.