Show m n BENT V STEMS STEMS' S S' S When hen removing the cj cylinder Under h he head ul d for Cor a a. valve grinding Job the condition of each valve Is Is' Is deter deter- determined determined mined as it is 13 removed Valves alvel that show burnt marks mark along one slip silo of ot their stems have bent benl stuns stems It If the stems Items hero straight ard tho the valves popped up and down true they would be bright brighton brighten on nn nil all sides a as a a. result of even ell pressure against al the guides |