Ukuba i-injini yokunyuka yaphukile, injini iya kungcangcazela ngamandla ngexesha lokusebenza, okunokubangela ingozi ngexesha lokuqhuba.I-injini yemoto igxininiswe kwisakhelo, kwaye injini inesibiyeli.Kukho neepads zoomatshini berabha apho injini kunye nesakhelo zidityanisiwe.Le pad yonyawo lomatshini inokuthintela ukungcangcazela okwenziwa yi-injini xa isebenza.Ukuba i-injini ye-injini iphukile, i-injini ayiyi kumiswa ngokuqinileyo kwisakhelo, esiyingozi kakhulu.

Ipadi yesibiyeli se-injini ikwabizwa ngokuba yiglue yonyawo lomatshini, kwaye igama layo lezenzululwazi nguukunyusa injini.Umsebenzi oyintloko kukuxhasa injini kunye nokusabalalisa umthwalo, kuba rhoqo xa iqalwa, injini iya kuba nomzuzu wokuxubha, ngoko irabha ye-injini inokulinganisa lo mandla.Kwangaxeshanye, irabha yonyawo lomatshini ikwadlala indima yokufunxa ukothuka kunye nokuxhasa injini.Ukuba yonakele, ukubonakaliswa ngokuthe ngqo kuya kuba yi-vibration enzima ye-injini, enokuthi ihambe kunye nengxolo engaqhelekanga.
Iimpawu eziqhelekileyo zokophuka kwephedi yokuxhoma injini zezi zilandelayo:
1. Xa uqhuba phantsi kwe-torque ephezulu, imoto iya kuthambeka, kwaye imoto iya kubanjiswa xa ibuyela umva.Oku kunokusonjululwa ngokunyusa i-accelerator.
2. I-injini ingcangcazela kakhulu xa iqalisa okanye ilayita i-air conditioning.Ivili lokuqhuba lingcangcazela kakhulu xa uqhuba ngesantya esiphezulu, kwaye ne-accelerator nee-brake pedals nazo ziyangcangcazela.
3. Xa ukhawuleza kwigiya yesibini okanye yesithathu, udla ngokuva isandi sokukhuhlana kwerabha.
Indawo yokuxhoma injini yophukile kwaye ifuna ukulungiswa ngokukhawuleza.Iipads zeenyawo zomatshini ziyaguga kwaye kufuneka zitshintshwe ngokukhawuleza.