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單項選擇題

In a diesel engine, an extremely leaking exhaust valve can cause （）.

A.misfiring
B.pre-ignition
C.interrupted scavenging
D.reduced scavenging

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單項選擇題

Diesel engine exhaust temperatures may be used to indicate （）.

A.leaking exhaust valves
B.an overloaded cylinder
C.a clogged injector nozzle
D.all of the above

單項選擇題

In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.

A.lube oil pump suction line
B.lube oil pump discharge line
C.bottom of the lube oil sump
D.outlet from the lube oil header