Kutuluka kwa utsi wa buluu kumachitika chifukwa cha kuyaka kwamafuta ochulukirapo m'chipinda choyaka. Zifukwa zolepherera izi ndi izi:

1) Chiwaya chamafuta chimadzaza ndi mafuta. Mafuta ochuluka amawomba pakhoma la silinda limodzi ndi crankshaft yothamanga kwambiri ndikulowa muchipinda choyaka. Yankho lake ndikuyimitsa kwa mphindi 10, kenaka yang'anani chothira mafuta ndikukhetsa mafuta ochulukirapo.

2) Silinda ya silinda ndi zida za pistoni zimavalidwa kwambiri ndipo chilolezocho ndi chachikulu kwambiri. Ngati kusiyana kuli kwakukulu kwambiri, mafuta ochuluka adzalowa m'chipinda choyaka moto kuti awotchedwe, ndipo panthawi imodzimodziyo, mpweya wotuluka mu crankcase wa injini udzawonjezeka. Njira yochizira ndikusintha ziwalo zomwe zidawonongeka munthawi yake.

3) Mphete ya pistoni imataya ntchito yake. Ngati kukhuthala kwa mphete ya pisitoni sikukwanira, ma depositi a kaboni amamatira mumphepo ya mphete, kapena madoko a mphete ali pamzere womwewo, kapena bowo lobwezera mafuta la mphete yamafuta litatsekedwa, mafuta ochulukirapo amalowa. chipinda choyaka ndi moto, ndipo utsi wabuluu udzatuluka. Njira yothetsera vutoli ndikuchotsa mphete za pisitoni, kuchotsa ma deposits a kaboni, kugawanso ma doko a mphete (madoko apamwamba ndi apansi akulimbikitsidwa kuti agwedezeke ndi 180 °), ndikusintha mphete za pistoni ngati kuli kofunikira.

4) Chilolezo pakati pa valavu ndi duct ndi chachikulu kwambiri. Chifukwa cha kuwonongeka, kusiyana pakati pa awiriwa ndi kwakukulu kwambiri. Pakudya, mafuta ambiri mu chipinda cha rocker arm amayamwa m'chipinda choyaka moto kuti ayake. Njira yothetsera vutoli ndikusintha valavu yowonongeka ndi ngalande.

5) Zomwe zimayambitsa utsi wabuluu. Ngati mafuta ndi ochepa kwambiri, mphamvu ya mafuta imakhala yochuluka kwambiri, ndipo injiniyo siyikuyenda bwino, izi zimapangitsa kuti mafutawo aziyaka ndi kutulutsa utsi wabuluu.