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Show Siniptifisd AUTO I.r.SSON NO. 117. Loxs of Vower. The writer has often said in tlumti .Minimi that thn'o thino, were. ,-.n,n ti.il tor the proper ruuniiii; of t lu m Him', namely : (loo.l i-oini'r.'nMon, ,vr let iiuvtur.i nii.l proper ignition. Wlu'ii tllO of lonn of power, IMIMtinK IT slopping of tlu- engine in nought for, thought should ho uivi'u to tlu'no three, essentials n,l th.'v should In- riiiniii.it 0,1 oik niter th,. other as the poM.il. le ''f of tho HouMo. I .Vttv of tho throe not lie-inn peifcc! , lllv ,':ui0 Kmn of iHiwor, tlioui;h lon j of ivuiiTi-sMon is iiMiallv tho lause of i pho iiii; of a il.'f,', i i (1u; may o ovii il 'In t u nit tank. ''I"' in'M plan' to loul. for l.'ii lm t;o ; "t i I". Iho vmIo. Tlu i,' aro a iiiiin j III'!' of Ihinun Uhoh 111 I ; - 1 1 1 In' Iho I'lllInK of l."il,a:;,' hoio, i,:iin,-l . t ho MiU on .iiiiiv hao Iotoiuo Ihiiiii'.I, or, tin It in j r in .-. 1 , ioiio, I, ami no in't',1 r,.t;i in.liiii:; Iho nlo h,'a,l niav linn, ai'',l; tin, j alv o nloin iiihv in o nt no k in il n nuiili' ; tho al o ni in ni:iv I oi o n 1, roll en or the a.l urn! on; nuln il!) may ,e too j lne,h, no thai iho ale in not nouting il'roieilv. .mi r in, lenient will toll vi whether or Hot the :ilv,n liee.l to tie reioiiiol. an this nliouhl le ilolin al'out oi ei lomi mil,"., mi, I the lael mat .lU1 ,7. ff - I fc U I' ' tT'? i F s-; U. , l fa n ' li s, --JUL H irli n ;th:s. Therefore, when thero is lo-s ol'l iVMvor, and t:u .-arh-areter not ro- I i-eu!.v bt'on tarv.rei with, l.ok lor rf cortiire.-.:cm. l.ft us sec trotu w lu to i the cumprrstion -an t't lt. Compression LoAkae. The illustration show? tho arious places throich which tho i-ot.iti?.1 cas miht cms?o. Tho s;-ark vlui; mnv loak at (A tho nut whioh ho!. in the porco'.ain into the nu-tal part, thi.i U-ak-C''ally boia atvompanio 1 hy a hissi:ic soun-i. The romoiv for this is to tighten this nut, anj this laiinii: o remedv the trmihle. it TNOuid vro'R1.v bo wise to rejila.-e tho There mav bo loitkao hot wi-en t he ! T''u and the fy!imbr or val e cap. ar ' the rlae whore tho ylw is M-rewt- i in. i as P.. The re:r.e.lv is to sorew tii-1 v'.w in farther, or u mav b necesarv to .put a new casket t that is. a la.kin j washer under it. Leakage here n.ay l e discovered tv pourini: a htt'.o oil amund the li. If the oil bubldox ! there is leakage, and the amount of ; leakac can be ju iod by the decrve of j bubbling- When repla -inj; a 5:ark I I'lue it is a cood practt.-e to rr.ake a j paste of some flake craphite and linseed i oil (or, if you have no linseed oil, cvlinder oil'- and to smear trr.s on the threads of the plur. Th:? will ul onlv I help to make the vluc t'C-it, but will I prevent the plutr and the mr-tal of the i cvlinder from iimn tucther, due to I the heat, so that the plug cannot be 1 taken out aain. I Tne compression co.'kt mav al.-o leak, j Thii mav t.e at the threads, as with tthe spark plu;;: at the valve, or the i stem may be broken, e-pe'-ially if it bo one of the Ion stem t vpe. The te-t i for leakage is the oil as piven for the 1 piuc- I might sav that the stems of the com press ion cock? do often break, ! and caue a creat leakage, and yet the i stem will look perfect to the eve. I Leakage may, and very orten does occur at the valve cap (('). Oil poured around them will also indicate whether I there is leakage at this place. When j the valve cap? are replaced aftr grind-ing grind-ing the valves, nw gasket? shouid al- wav? be used. Smearing a paste rnade of brown shellac and flake graphite on the threads will do a great d'al to make them tight. I do not recommend the usinc of the shellac and graphite on the $Iark plugs, as the shellac i? liable to make the unscrewing of the plugs difficult, dif-ficult, and should Jhe plugs hold tighter tight-er in the valve cap? than the valve caps hold in the cvlinder. you will not be able to take out a plug without taking tak-ing the cap out also, so that the ro th, v r.ee 1 tho rojrindixg mil be indi -:.'d !.. o.i bv the -;id :.tl !o of power. The t:i.t that tho c l.,:.d hll- warpe I ni:i:-::il in ! !.e l:i!. r lito ;e :irs .an oi.lv b. r;i. :!.,d bv tak:r. the. :ilt out. Vou w ill be able tn eo the broken i.r-:.g or ::eksnr al e. :i!o vo u .-:ih t.'!l if ). : i ,:!!. tuiti :irv :... ht-h bv f. el'.i.c "I ti.ejn. Th-v -ho':'.! hat- a e!. :.rati. e of a h-u t t'n' ttiMkne-- tif a p-.e of pap-r, and, bv raiMi:.; :!;,' ii ti t with v.mr r.nor- vii s!;.--:ld be able to f.-e th e b-a r a n e. The i.et p!;o e win-re leakage ' la-ld" la-ld" to o 'i-ur is at fK the piston n TI..- :i.av In- ! -.if to a lrok :i rn.g. w . rn ri'i: the r.ng-i t k.ng be.-:l;!so of .-ar J bon or gu!i:i::. d (t:i i.-itnig betw.-en 'ti:. :n ant ::..:r gr-.o-.,--, :i ,,re.; ; .s. -ratehed . 1 : n... r, .: :e to the t-n-I gin-- be.'.or;:-. t. .-rheated f-r laek of "! or w at 'r. or to ; in- ..lo- .,f 1 1... ; ring- not being N :4'.- ! v :ai ii:-:t:.ees ! apart. Where th- rn.g- are broea ,.r j w..rn t hi v u.u-t i- r- ...!. li i a 1 good pra.Ti.'O to po';r i.bout a table- I T;-"nfui of ker :e int.. .-a- h c l.nd.-r (about uV : a w-e.k, and it is best to j :. th: v. Ii'.le tl;.- i iij.,;'!,' warm .'it't.-r j cui. :ng a run. Th: w 1 1 i tend :o i-revcnt ) r:t:g' from st:. king in their gro.es. If tin- ovimd' rs have ..,-n .... red vou wuil have to lav.' th.un rebore.l aud n--w r;ngs and pi-tuns f :t d. Tlie ba 1 b-nk at the piston ring will general: v in lieate its-df by a h:-.ing soi.nd :n the er.gljie when i limbing a h:il. Von ran tell whi th r or not vnur engine en-gine has o-; com i, region bv era n king it slowlv r.r.d Tioiieing h.nv rnu.di v-ni miht pull on the .-ran,; handle. To 'toll if there is lo-n of .'(.!t;i rer--ion in mie " 1 : !idT, opt :i all 1 ii ! eompre- - :nn eo.'k but one and feel the1 compression in r:: cvhp-ier having the closed com-pre-ion cock. While a poor mi T uro will result in little power. remomb'T that the adjustment adjust-ment of the carbureter. t which the condition of the mixture is due, will not of its.-lf go wrong. For this reason, rea-son, when an engine has developed good power and then ha- gr.i-'ually lot it, the carburet' r should not lie touched, as it'is extremely unlikely that tlie mixture mix-ture is to bhirno. The ignit inn is so seldom the cruise of lo-s of power, except in tlie case of a musing cvlinder. that it can be practically prac-tically ignored. Too hit a spark will, however, moan loss of power. Lack of oil and overheating, perhaps due to lack of water, will result in an increase of friction and therefore in a eoiiMimption of tlie power. This means loss of power. |