Thawj kauj ruam: Muaj ntau tus neeg uas xa cov hluav taws tawm sai sai. Thaum lawv pom qhov chaw, lawv nres tam sim ntawd thiab tua hluav taws. Qhov tseeb, yog qhov hluav taws kub sai sai, cov roj av hlawv tsis kub hnyiab, ces nws thiaj li khoov. Maj mam, ua kom cov pa tawm. Nws yog qhov zoo tshaj plaws rau tos 30 feeb li 1 feeb kom tua cov nplaim taws thiab cia cov roj hlawv tawm. Qhov thib ob, tsis txhob cia lub tsheb nyob hauv lub xeev ntawm qhov tiav, uas yog, khiav ntawm kev khiav qis, xws li tsheb khiav jam. Yog tias lub tsheb tsis tau, lub tsheb tsis tuaj yeem qhib, qhov teeb meem no yog qhov yooj yim tsim daim ntawv tso tawm cov roj carbon deposits, yog li muaj caij los rub lub tsheb mus rau kev kub ceev thiab khiav, qhov ceev ceev, thiab airway muab ntxhuav tawm. Cov roj carbon deposit yuav tsawg dua.
Thib ob: Ntsuas roj zoo. Raws li hais dhau los, cov pa carbon deposits yog ib yam khoom tsim los ntawm cov khoom siv hluav taws xob tsis zoo txaus. Yog li, peb yuav tsum xaiv qhov chaw nres tsheb roj thaum lub sij hawm tso tseg, qhov zoo ntawm cov roj kuj zoo ib yam, tab sis nws tsim nyog teev tias qhov zoo tshaj plaws tsis yog tus lej siab, tus xov tooj yog cov octane tus naj npawb ntawm cov roj, uas muaj feem xyuam rau lub cav ua haujlwm. Lub cylinder knock teeb meem.
Qhov taw qhia thib peb: kev tu lub qhov rooj tas li. Cov nyhuv ntawm kev tswj cov cua ntawm cov huab cua kom tsawg yog tau los ntawm kev ntxuav lub qhov tsuj. Ua ntej ntxuav lub tsuaj, pib tua qhov sib tsoo, tshem tawm cov roj teeb tsis zoo, tshem tawm cov hlua txoj hlua, tshem tawm cov dej haus kom huv, thiab tshem cov ntsia hlau uas kho qhov ntswj. Tom qab tshem qhov ntswj, siv tus neeg tu lub tsev tu kom rov qhwv lub raj. Yog tias nws tsis yooj yim rau ntxuav, so nws nrog lub paj rwb xov.