Show MOTORISTS LOSE LOS IRIS 0 F GAS inefficient working of automobile engine Is cause of leakage of costly fuel FAULTY compression 0 0 ED 0 D sar ranged motor may appear to run fa aly riy well but trouble occurs when car Is being run at moderately low speed thousands of gallons of basol ne are hasted every enery day by motorists be ause muse of the neff elent operation of heir ei ex gines an important detail to watch to seep keep tl it e engine running efficiently is I 1 e compression A motor with ith faulty empress on may api apt ear to run fairly ell wl en drion dehing the car at a reason ible speed or v a I 1 e en n it Is working hard lost shows up when the ir is being arh en at a comparatively w speed how to tell it under either of these ni i dillons the ngin e A will run with an irregularity that makes the car jerk or juny in tead of running steadily as it shor sho chis indicates that there Is consider ible able loss of power and that much more bisol ne has to be burned than hen ihen the engine is de developing eloping its full ov onn er in fact gasoline mileage may be cut bearly in half through compress on loss and still the engine may continue to run fairly well according to the ideas of an amateur driver try the crank if an engine is not running well uell and a compression lo loss los s Is suspected the simplest way nay to detect it Is to use the crank and turn the engine over by hand and thus feel the compression on each individual cylinder you will ill nearly ala always s find that some pistons vill go over compress on much easier than others and this means that somewhere where there Is a leak teak in this cylinder the number of miles which a car should run Jt hout having baning the valves reground varies narles greatly depending on ol 01 oiling biml and other engine conditions with the me avenge car under no mil running conditions however it iq I 1 probably wise to have hae the valves ground at least once every to miles depending on the opera ing condition of the motor |