單項選擇題

Misfiring in a diesel engine at light loads can be caused by（）

A.high lube oil temperature
B.low lube oil temperature
C.excessive cylinder cooling
D.high air injection pressure

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In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in （）

A.increased engine back pressure
B.sulfuric acid corrosion
C.surface pitting of the turbocharger
D.moisture impingement on the turbocharger compressor blade

單項選擇題

When a diesel engine compression pressure is checked, the indicator is connected to the （）

A.cylinder exhaust ports
B.injection line
C.cylinder indicator cock
D.banjo oiler line