Spark plug gap


Well-Known Member
Nov 14, 2018
Try.030 for your 100cc mine lags and pops at .025

For the engine to lag and pop because of the S/P gap. The S/P would have to be old and eroded or the S/P gap was set below recommended specs
New plugs have sharp edges that help the spark .025" is recommended and fine
If the S/P was old and eroded, Yes, increasing the S/P gap to .030" will make a hotter fatter spark to ignite the Air Fuel Mix properly
But it takes more Elec. to make a hotter fatter spark, demanding more Elec. from the Elec. system