单项选择题
If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）
A.low exhaust back pressure
B.air in the fuel system
C.gasket blow-by or leakage
D.incorrect assembly of idler springs
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相关考题
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单项选择题
A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?（）
A.Hydraulic starting
B.Electric starting
C.Ignition
D.Fuel -
单项选择题
The exhaust gases in a supercharged two-stroke/cycle diesel engine are expelled from the cylinder by （）
A.pumping action of the piston
B.pressure of the fuel charge
C.vacuum developed in the manifold
D.pressure of the fresh air charge -
单项选择题
Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
A.Electric power and starting air
B.Lube oil standby pump and control air
C.Hydraulic switch and engage jacking gear
D.Motor drain and pneumatic control system power
