Umgomo Wokusebenza: 1. Lapho umsebenzi wamafutha we-oyili uyakhipha uwoyela lapho isitoreji samafutha se-piston cavity cavity. 2. Ngalesi sikhathi induku iyavela, ibonisa isitoreji samafutha esijwayelekile. 3. Lapho ipompo kawoyela iyeka ukusebenza, i-oyili yokuphampula ngaphandle kokucindezelwa. 4. Amafutha ase-piston cavity, ngesenzo sesenzo sentwasahlobo endaweni yokuthambisa, le nqubo ikhombisa ukusetha kabusha kwenduku. 5. Qedela isenzo sonke sikhombisa ukuthi amafutha ajwayelekile.