Umphunga uhlala waziwa njenge "carburetor". Esona siqwenga sibalulekileyo sezixhobo kwinkqubo ye-injini yepetrol. Isetyenziselwa ukuthabatha ipetrol kwaye isebenze umxube onokutsha onomoya onomoya. Ihlala ijongwa nge-sday, amagumbi okudlala, iivalve zenaliti, umqala, ifutha, kunye nemingxunya yokulinganisa imingxunya.