单项选择题
A.heavy carbon deposits will buildup on the valves and in the exhaust B.fuel dilution is increased at low load C.exhaust valves may be damaged D.all of the above
Diesel engine fuel oil contamination often results in （...
单项选择题Diesel engine fuel oil contamination often results in （）
A.governor malfunctions B.fuel injection system malfunctions C.high cylinder lube oil temperatures D.low intake temperatures
When a diesel engine is operate at partial load, as com...
单项选择题When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average （）
A.air quantity aspirated B.fuel injection pressure C.combustion pressure on the power stroke D.compression on the compression stroke
The most common diesel engine fuel system problems are ...
单项选择题The most common diesel engine fuel system problems are caused by （）.
A.incorrect adjustments B.dirty fuel C.broken fuel lines D.excessive vibration
