单项选择题
A.High sulphur content fuel B.High lube oil temperatures C.High vanadium content fuel D.Excessive piston slap
Reducing the clearance between a valve stem and rocker ...
单项选择题Reducing the clearance between a valve stem and rocker arm will result in the valve （）
A.having a shorter duration of opening B.having a longer duration of opening C.closing sooner D.opening later
If you increase the clearance between a valve stem and ...
单项选择题If you increase the clearance between a valve stem and rocker arm, which of the listed condition will occur?（）
A.valve will open later B.valves will close later C.amount of fuel injected will be increased D.amount of fuel injected will be decreased
A drop in compression pressure in one cylinder of a die...
单项选择题A drop in compression pressure in one cylinder of a diesel engine can be caused by（）
A.a leaking fuel injection nozzle B.a clogged air filter C.early fuel injection D.burned valves
