Quote:
Originally Posted by humfrz
Please help this old man out here ........ 
If the cylinder is charged and the valves are closed and the piston is at/near the top of its compression stroke and the spark plug fires ....... what's to "blow out the spark" ........ 
humfrz |
Spark "Blow Out" is a misnomer in most cases.
All that's usually happening is the extra air/gas in the cylinder makes it harder for the arc to jump the gap.
The pixies get sent to the plug but can't make the jump.
Thus the recommendation to make the gap smaller.