Correct Missing Cylinders Before Running

Correct Missing Cylinders Before Running

Do not let your engine continue to run when one or more of the cylinders are missing explosions. This makes the engine knock, although you may not notice it, flattening out the bearings and hastening the time when the bearings will have to be taken up—an expensive job, which every motorist puts off as long as possible. The best way to locate a missing cylinder is to open the compression relief valves, one by one, looking for flame at each one. If no flame is seen open the throttle slightly. This gives the right amount of gas to each cylinder, so that the flame will be strong enough to shoot out.

Engines without compression relief valves need a different treatment. Short circuit each cylinder in turn by means of a screw driver resting on the cylinder with the blade touching the head of the plug. If the engine slows down the cylinder is a live one. If it is not affected by this process the cylinder is not firing. With six or more cylinders this is extremely difficult to notice. With a six cylinder engine ground the wires to Nos. 1 and 6 plugs and try out like a four cylinder engine. Then replace these wires and ground Nos. 3 and 4. With a V-type engine, ground all the wires on one side and test out the other side and then change the wires and finish on the untested side.

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