Show High Compression Term Is Tersely Explained In the days of f f muzzle loading londing cannon cnn can non nOli the tighter the hue charge was packed with the ramrod the greater the he force furce of the shot Similarly In III the high compression engine of to today ny be lime gas charge U is packed Jacked Into a II smaller space with whim the tile result that when wilen the spark plugs Illus fire file the compressed mixture there thre Is greater grenter grent great er force or power exerted on the pistons pis tons This greater greuter power vr Impact with attendant at nt Increase In III heat beat makes It necessary ne necessary essary that the spark plug be of the correct type In order to Old avoid pre pre- Ignition and rapid wearing out of If the plug Another Important pointer Is that the plug gup gap should hI be he set sll at nt for high compression engines because as compression Increases a greater re fl resistance to 0 the tile flow of electricity Is set up and o a narrower gap JUP Is necessary nary sary to enable the current to jump from one electrode to the tho other Spark Spurk plugs may muy nut not deliver H a spunk unless the time points are ore set at nt the proper gap gup and It II Is advisable to check chek the gap gnp from rolD time to |