Show CARBON CAUSES CAUSE ENGINE TROUBLE Millions of Miles Lost Annually During Cleaning Of or the 20 and halt ono million motor vehicles chicles including automo automo- automobiles automobiles biles bites trucks and tractors now In daily operation In the United I States Stales 20 million are art vitally affected af- af af affected by carbon troubles accord according nIng ing to a statement by a n we known we-known n I known automobile authority I Tho The actual dollars and cents cost to the owners o of ot these ye- ye ve vehicle bides hicle caused by the necessity for Cor removing the tho carbon from the motors Is approximately million and ond the use useful Cui ser serIce service service ice obtained from them is reduced by 90 DO million working hours each year oal because of carbon ho bo said I USES CAUSES KNOCKS I The Tho valve alvo motor ac- ac ac I ac-I cun thick deposits of carbon on the piston head the walls and around the valve vahe seat This Thill carbon seriously affects the thc operation of the motor reducinG power and economy and ulti ultimately causing a L l pronounced car car- carbon carbon car carbon bon knock It It must be removed by mechanical me- me me mechanical means either cither through burning and the use of oxygen or through the more effective methods of ot scraping which requires re- re rc quires that the motor motol be bo partially torn down This cleaning should be done not less than once once every mil s I In to the case I of the owner moans means twice a year The cost cosi win will III run from an a av- av crago av-crago v- v crago of 16 86 G pir pr pL cleaning by th the burning method to as high as Hi 15 1 per 1 cleaning by the scraping meth meth- method method method od giving an average of ot around Ul per car cair The time required for clean clean- cleanIng cleaning clean In Ing varies varlee from Crom one hour bour for tor the burning up to eight Ight hours for Cor Corthe forthe the scraping giving on 1 n average per car eliI of ot four foUl and one halt one hours or a total of or 90 million hours hour which the cars are out or of orsen sen service Ice for fOI carbOn cleaning lUG BIG MILEAGE OE LO LOST Reduced to mileage giving the av average rale l service per year for the car cal as 10 million and the average e number of working working- hours per car carns caras carns ns as million is means that mil mil- mu mil lion miles of ot actual running are cut oft off e each ch year because of ot car car- car bon carbon At the present average price ot of motor care cars the tho money cost alone brought about by carbon would pay for tor 2 23 25 per er cent of the entire ro motor car production of oe the coun coun- coun- coun try country this year nn |