ENGINE WILL NOT START
When the engine will not start on cranking it eight times or so, it is useless to continue to crank it, for there is every reason to believe that something is wrong. Too often the difficulty is in forgetting to switch on the ignition circuit or to open the gasoline feed. Cranking the engine slowly will not reduce the pressure in the inlet pipe sufficiently to draw out of the spray nozzle the quantity of gasoline required to form an inflammable mixture; quick cranking is necessary. Too much priming will result in the formation of a rich mixture; the gasoline should be permitted to evaporate, or the carburetor drained, and then primed gently.
The failure of an engine to start on a cold day may be due to the slowness with which gasoline evaporates when chilled. As it is obviously most unwise to heat the carburetor with a flame, the best thing to do in such a case is to pack it with cloths soaked with hot water. A little gasoline squirted into the air inlet, or cotton waste soaked with gasoline and held over the same opening, will almost always permit the engine to be started; another method is to squirt a few drops of gasoline into the cylinders through the relief cocks.