Show BAD compression IS HUGE THIEF OF FUEL faulty running of engine wastes much gasoline thousands of gallons of gasoline are wasted every day by motorists because of the inefficient operation of their engines an important detail to watch to keep the engine running efficiently is the compression A motor with faulty corn com may appear to run fairly well when the car is being driven drinen at a rea speed or when it Is weiking hard lost compression shows up when the car is being driven at a corn com pa lely low lou speed under either of these conditions the engine will run with an irregularity that makes tl e car jerk or jump in stead of running steadily as it should this indicates that there Is consider able loss of power and that much more gasoline has to be burned than when tl e engine is dev de eloping its full power in fact gasoline mileage may be cut nearly in half through compression loss and still the engine may continue to run fairly well according to the ideas of an amateur driver if an engine Is not running well and a compression loss Is suspected the simplest way to detect it Is to use the crank and turn the engine over by hand and thus feel the compression on each individual cylinder apu ipu 1 ou will nearly always find that ome pistons will go over compression much more easily than others and this means that somewhere there Is a leak leal in this cylinder the number of miles which a car should run without having the valves reground varies greatly depending on oiling and other engine conditions with the average car under normal running conditions however it Is ably wise nise to have the valves ground at least once every 5 to 10 miles depending on the operating con of the motor TRACE TROUBLE TO IGNITION Eff efferent elent performances call for re moval boval and cleaning of distributor head monthly it his been stated that at least 80 per cent of motor trouble can be traced to ignition for efficient performance the distributor head s bould be removed and cleaned at least once every month just unfasten tl e clip and rotate the head until it can be lifted off inspect the distributor head for cracks and replace it with a new one if any are found the only repairs that can be made on a distributor are to tighten loose connections and clean the inside As the is in direct contact with the distributor points in some systems it Is a good plan to wipe these points w th a thin film of vasel vaseline lne after they lave law been cleaned the best method of cleaning is to briskly rub the points with brass polish or the rubber on the end of a pencil penell emery cloth should never be used most distributors are equipped with oil holes or fittings and as the dis tri butor shaft rei revolves olves at a high rate of speed it Is essential that you apply oil in these recesses at definite inter vals automobile T 1 0 4 the bill can be reduced by never allowing the engine to run idle A great deal more gasoline Is used in this way than Is suspected slamming of doors on a car Is a tice which should be molded at all times persistent slamming racks the hinges and loosens the doors until they become wobbly and hang loosely when removing valves from an en gine for any purpose it Is of the ut most importance to beep them separate pirate se and replace them in the identical seats from which they were removed a folding boldin rain curtains so that the celluloid lights do not rub against each other and scratch Is simply a matter of inserting sheets of be tm tween een them |