斑竹當時的原文:use a spark plug pressure guage, to screw in each spark plug hole, hand rotate the engine to see if the pressure changes. If any one of those cylinders does not show pressure change, the valves for that cylinder need work.
還有buddy1234567us的,建議:如果不換缸套(我見的多數人不換缸套和活塞), 一定要用3個爪的電沙輪磨缸壁頂部. 舊車缸壁頂部的直徑都會明顯變小, 增加阻力. 另外, 活塞RING的間隙挺難掌握. 不要磨短了. 別的沒什麽難的.