A、A.increased engine breathing efficiency
B、B.excessive valve lash
C、C.excessive lube oil consumption
D、D.lower than normal fuel consumption
更多“Worn diesel engine intake valve guides can result in （）”相关的问题
A、A.burned exhaust valves B、B.excessive spring compression C、C.spring surge D、D.worn valve seats
A、worn valve seats B、worn main bearing C、excessive valve clearance D、weak rocker arm springs
A、worn or broken cylinder liner sealing rings B、high cooling water temperature C、worn or broken piston rings D、low fuel oil pressure
A、Diesel engines have more advantages in comparison with gasoline engines B、Diesel engines have more advantages in comparison to gasoline engines C、Gasoline engines have more advantages in comparison with diesel engines D、Gasoline engines have more advantages in comparison to diesel engines
A、early injection timing B、worn orifices in the injection nozzles C、worn or scored cylinder liners D、using a fuel with too low of a cetane number
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