Ijwi ridasanzwe ryimpeta ya piston ririmo cyane cyane amajwi yo gukomanga ibyuma byimpeta ya piston, ijwi risohoka ryimpeta ya piston nijwi ridasanzwe ryatewe no guta karuboni nyinshi.

(1) Ijwi ryikubita ryicyuma cya piston.
Nyuma ya moteri ikora igihe kirekire, urukuta rwa silinderi rwambarwa, ariko ahantu igice cyo hejuru cyurukuta rwa silinderi ntaho gihurira nimpeta ya piston hafi ya byose bigumana geometrie yumwimerere nubunini, bigatuma urukuta rwa silinderi rutanga intambwe . Niba igitereko gishaje cya silinderi cyangwa igitereko gishya cya silinderi cyasimbuwe ni gito cyane, impeta ya piston ikora izahura nintambwe ya silinderi, bituma icyuma "pop" kijimye. Niba umuvuduko wa moteri wiyongereye, urusaku rudasanzwe narwo ruziyongera. Mubyongeyeho, niba impeta ya piston ivunitse cyangwa ikinyuranyo hagati yimpeta ya piston nigitereko cyimpeta nini cyane, bizatera kandi ijwi rinini ryo gukomanga.

(2) Ijwi ryo kumeneka kwimpeta ya piston.
Imbaraga za elastike yimpeta ya piston iracika intege, icyuho cyo gufungura ni kinini cyane cyangwa gufungura hejuru, kandi urukuta rwa silinderi rufite igikoni, nibindi, bizatera impeta ya piston kumeneka. Ijwi ni ijwi "kunywa" cyangwa "urusaku", cyangwa ijwi "ribyuka" mugihe hari umwuka mwinshi. Uburyo bwo gusuzuma ni ukuzimya moteri mugihe ubushyuhe bwamazi ya moteri bugeze hejuru ya 80 ℃. Muri iki gihe, urashobora gushiramo amavuta mashya kandi asukuye muri silinderi, ugashiramo igikonjo kugirango uhindure bike, hanyuma ugatangira moteri. Niba bigaragaye, dushobora kwemeza ko impeta ya piston isohoka. Icyitonderwa: Igenzura ryimodoka no gufata neza Major

(3) Urusaku rudasanzwe kubera imyuka myinshi ya karubone.
Iyo hari imyuka myinshi ya karubone, urusaku rudasanzwe muri silinderi nijwi rikarishye. Kuberako imyuka ya karubone yatwitse umutuku, moteri ifite ibimenyetso byo gutwika imburagihe, kandi ntibyoroshye kuzimya. Ishirwaho ryububiko bwa karubone kumpeta ya piston ahanini biterwa no kubura gufunga gukomeye hagati yimpeta ya piston nurukuta rwa silinderi, icyuho gikabije cyo gufungura, gushyiramo impeta ya piston, no gufunga ibyambu byimpeta, nibindi. Igice cy'impeta kirashya, bikavamo gushiraho imyuka ya karubone cyangwa no kwizirika ku mpeta ya piston, bigatuma impeta ya piston itakaza imbaraga zayo kandi ikagira ingaruka. Mubisanzwe, iri kosa rishobora kuvaho nyuma yo gusimbuza impeta ya piston nibisobanuro bikwiye.