Kubadilisha oil ya engine ni moja ya matengenezo muhimu zaidi kwa maisha ya injini. Oil hufanya kazi ya: Kulainisha sehemu zinazotembea ndani ya engine ili kupunguza msuguano. Kupunguza joto la engine. Kusafisha uchafu na chembe za chuma. Kuzuia kutu na kutu ndani ya engine. Kwa kawaida, muda wa kubadilisha oil hutegemea aina ya oil inayotumika na maelekezo ya mtengenezaji: Mineral oil: kila kilomita 5,000–7,500 au miezi 6. Semi-synthetic oil: kila kilomita 7,500–10,000. Full synthetic oil: kila kilomita 10,000–15,000 au kulingana na mwongozo wa gari. Pia oil filter inapaswa kubadilishwa kila unapobadilisha oil. Kwa injini za kisasa kama FB20 za Subaru ambazo umewahi kuulizia, ni muhimu kutumia oil yenye grade iliyopendekezwa (mara nyingi 0W-20 full synthetic, isipokuwa mtengenezaji aseme vingine) na usicheleweshe kubadilisha oil kwa sababu injini hizi ni nyeti kwa ubora na kiwango cha oil. Ukiniambia: Aina ya gari Mwaka wa kutengenezwa Aina ya engine nitakuambia oil sahihi na muda una...
Machapisho
FB20 ENGINE Engine za Subaru FB20 zina sifa ya kuwa nzuri kwenye matumizi ya mafuta na ulaini wa uendeshaji, lakini baadhi ya matoleo—hasa ya miaka ya mwanzo (takriban 2012–2015)—yalikuwa na matatizo yaliyowafanya watu wengi waone "zinasumbua". Sababu kuu ni hizi: Kula mafuta ya engine (oil consumption) kutokana na matatizo ya piston rings kwenye baadhi ya injini za mwanzo. Hii ikipuuzwa inaweza kuharibu engine. Kuchukia overheating. FB20 ikipata joto kupita kiasi inaweza kupata uharibifu mkubwa, hivyo mfumo wa kupoza lazima uwe katika hali nzuri. Kutumia oil isiyo sahihi au kuchelewa kubadilisha oil. Engine hii inapendelea sana oil yenye kiwango kinachopendekezwa (mara nyingi 0W-20 kulingana na toleo), na kutotii kunaweza kuathiri mfumo wa AVCS. Matengenezo duni. Wamiliki wengi hawakufuatilia kiwango cha oil mara kwa mara, na kuendesha engine ikiwa oil imepungua kunaongeza uchakavu. Hata hivyo, si kwamba FB20 zote ni mbaya. Zikitunzwa vizuri—kubadili...
SPARK PLUGS CHANGE.. Spark plugs zinatakiwa kubadilishwa kulingana na aina yake na mapendekezo ya mtengenezaji: Copper spark plugs: km 20,000–30,000 Platinum spark plugs: km 60,000–100,000 Iridium spark plugs: km 80,000–160,000 Kwa engine nyingi za kisasa kama Subaru FB20, hutumia Iridium spark plugs, ambazo mara nyingi hubadilishwa baada ya km 100,000–120,000. Dalili za spark plugs kuhitaji kubadilishwa: Engine kutetemeka (misfire) Gari kukosa nguvu Matumizi makubwa ya mafuta Ugumu wa kuwasha engine Check Engine Light kuwaka BY..Eng.Joseph Mujungu
CVT transmission fluid Change.. Kwa ujumla, CVT transmission fluid inashauriwa kubadilishwa kati ya kilomita 40,000–60,000, hasa kama gari linatumika kwenye mazingira magumu (foleni nyingi, joto kali, milima, au kubeba mizigo). Kwa matumizi ya kawaida, baadhi ya watengenezaji huruhusu hadi 80,000–100,000 km, lakini mafundi wengi hupendekeza usisubiri kufika hapo kwa sababu kubadilisha mapema husaidia kuongeza maisha ya CVT. Dalili zinazoonyesha fluid inaweza kuhitaji kubadilishwa ni pamoja na: Gari kutetemeka wakati wa kuondoka. Mabadiliko ya mwendo kuwa yasiyo laini. Kelele kutoka kwenye transmission. Kuchelewa kuitikia unapoweka D au R. Fluid kuwa nyeusi au kunuka kama imeungua. Muhimu: Tumia CVT fluid inayopendekezwa na mtengenezaji wa gari. Usitumie ATF ya kawaida kwenye CVT isipokuwa imeelekezwa na mtengenezaji. By.Joseph Naftari Mujungu
MAZDA CHANGAMOTO YAKE NINI.. Swali zuri. Ukweli ni kwamba si sahihi kusema engine zote za Mazda zinakufa sana. Kuna aina za engine za Mazda ambazo ni imara sana, lakini nyingine zina matatizo yanayojirudia kulingana na model, mwaka, na matengenezo. Sababu zinazofanya baadhi ya engine za Mazda ziharibike mapema ni: 1. Kutopata matengenezo kwa wakati – Kubadilisha engine oil na filter kwa kuchelewa husababisha uchakavu wa bearings, timing chain, na turbo (kama ipo). 2. Joto kupita kiasi (overheating) – Mfumo wa kupooza ukipata hitilafu (radiator, thermostat, water pump), cylinder head inaweza kupinda au head gasket kuharibika. 3. Mafuta yasiyo sahihi – Kutumia oil yenye grade isiyopendekezwa kunaweza kuongeza uchakavu, hasa kwenye engine za kisasa za Skyactiv. 4. Carbon buildup – Engine nyingi za Skyactiv-G zenye direct injection zinaweza kujaza carbon kwenye intake valves baada ya muda, jambo linalopunguza utendaji. 5. Kupuuza dalili za awali – Kelele za timing chain, taa ya engine kuwa...
Spark plugs work..
Spark plug kazi yake kuu ni kutoa cheche (spark) ndani ya silinda ili kuwasha mchanganyiko wa hewa na mafuta wakati unaofaa. Kazi zake ni: Kuwasha mchanganyiko wa hewa na mafuta kwenye silinda. Kusaidia injini kuwaka na kufanya kazi vizuri bila kutetemeka. Kuboresha matumizi ya mafuta ikiwa spark plug iko katika hali nzuri. Kupunguza uchafuzi wa mazingira , kwa sababu mwako unakuwa kamili zaidi. Dalili za spark plug mbovu ni pamoja na: Injini kuwaka kwa shida. Injini kutetemeka (misfire). Gari kukosa nguvu. Matumizi ya mafuta kuongezeka. Taa ya Check Engine kuwaka.
ENGINE FLUSH
What is Engine Flushing? Engine flushing is the process of cleaning up or warding off the sludge build-up in the engine. Let’s understand, what causes this sludge build-up. Engine oil is meant to cycle through and lubricate the engine components to help them function smoothly. Basically, engine oil is meant to remain in motion. When a car takes short trips or remains idle more often than not, the engine oil particles start leaving deposits that keep on building up sludge inside the engine. An element as small as 25 microns (approx. 1/1000 of one inch) can be removed by the best of the oil filters available. Particles even smaller than the aforementioned size are there in the oil that just can’t be filtered out. Over time these tiny particles accumulate together and build up sludge. The sludge, however prepared, increasingly resists the flow of engine oil. This issue, if neglected, can eventually lead to major troubles such as improper working valves, spark plugs, exha...