Impeta za Piston nibice byingenzi bya moteri yaka imbere, cyane cyane bigenewe gufunga icyumba cyo gutwika. Byorohereza gutwika neza, kuzamura imikorere ya moteri, no kwemeza ko amavuta na gaze bidavanze, ibyingenzi kubikorwa byiza. Gusobanukirwa uburyo impeta zikora bishobora kugufasha kumenya akamaro kazo mugukomeza ubuzima bwa moteri no kuramba. Hano
