Show bad plugs cause missing and jerking of motors there are few things more annoying to the motorist than a missing skipping motor besides the certainty that this condition Is imposing a serious strain upon the engine clutch cli transmission and the rest of the propelling system of the car due to the irregularity of the power impulses lt it means increased gasoline and oil consumption and carbonized cylinders too frequently motorists are prone to suspect the carburetor and start to tinker with the adjustments when as a matter of fact there Is nothing tile the matter with the mixture the whole trouble may be due to uneven spark gaps caused either by bending the electrodes unintentionally in removing or cleaning the plugs and sometimes in replacing them or by the points becoming pitted to such stich an extent that the gap Is materially widened by spacing the gap so that there Is a space of f one thirty secund of an inch between tile the actual firing surfaces of if the two points this condition may be quickly and easily corrected |