Ogden Standard-Examiner | 1927-01-30 | Page 18 | How's She Ittin? Hints on Car Care

o oIt's 00 Its It's poor driving driving- probably that causes caulle the first clinking of the engine when whey It pulls up a II hlll bill Later If It that Isn't corrected ted It turns out to be a knock ck that can be taken talen out only by the tho garage mechanic This of ot course Is the mos most common of ot all an engine knocks knock There are a dozen or more oth other r vs va The Tho clink clank of o the engine when Its It's pulling pulling- hard however results first from Crom the fact tact that the driver falls fails to use the spark spar lever properly at such times and then from the presence of o tot too I much carbon In the cylinders A slight move mo ot of tho the spark lev lev- lever lever er retarding the spark park usually corrects the first fault R Retarding the spark when starting or when going up lull gives gins the engine a II chance to pun pull harder and at a II slower speed It makes use ot of all an the mixture fed Into tho the cylinders at the proper time and with unified results Failure to retard the thc spark when the engine gets Etta ets an extra load hastens the end of that engine I Farther arther It contributes contribute to the accumulation of o unwanted carbon on the pistons around the I valves and on the cylinder clInder he heads Carbon Carbon too much of ot It causes n 1 knock similar to the spark sparl knock But nut this cant can't be bo controlled con con- cotroned con controlled trolled by retarding the Ule spark The The carbon has to be removed The cause of carbon accumulation accumulation tion may be too rich rich a mixture poorly fitted or loose pistons per per- pe permuting permitting muting the tho oil to he be Injected Into the c cylinders q-lInders an nn overheated engine or poor crank crank- crankcase crank case case oil Another kind o of oC a knock that requires immediate and acid expert attention Is the main bearing va vat a l a sort lort of deep heavy thu thud thud- thud thud-thud i- i thud while tho the car Is iss going on the level The bearings neo need 1 tightening or replacement In any case they must must be attended to Immediately y In fact at times Its ft's unsafe even C lm to go along along until a garage Is reached The main bearing knock will be loudest under a pull pun or lo load d Ifa It If Ita Ita a bearing Is 11 unusually loose it will cause the engine to vibrate excessively when hen It Is speeded up Thero Theres There's danger of o the tho crankshaft It IL it isn't corrected immediately A light pound or sO sometimes ne a clatter means loose connecting rod bearings and if 1 they're conty com completely burned out they'll bo be heard at all 11 times under all an con con- conditions conditions con conditions Usually however they're apparent when the car ar Is going at about 20 to 0 30 miles an hour A knock almost similar to th the carbon cartoon knock Is that of of piston slap which Is due to loose pie pis- pistons pis pistons tons or worn piston rings s Lark Lack of ot proper lubrication In Inthe inthe Inthe the gears will cause causo c uso alt an- an another other older sort of knock a loo loose fly fly- fly flywheel wheel another Loose cylinder nuts connecting rods out of alignment worn valve stems and valve guides g loos loo wrist pine are other other engine troubles trou trou- troubles troubles bles that cause knocking Outside of the tho spark knock which can bo be remedied by the tho thoI I driver all aU other forms Corms notify notley the motOrist of trouble that must be corrected i by y the garage mechanic Ica ic It If Its It's only the carbon knock least harmful of ot all aU power is last fuel I is wasted and the tho engine Is 1 worn down faster taster until the knock la I cleaned out