Question 443Motor Plants - Assistant Engineer70% to pass
A diesel engine may fail to start when being cranked, due to_______________.
AI Explanation
The correct answer is B) insufficient compression.
A diesel engine requires sufficient compression in the cylinders to ignite the fuel. If the compression is too low, due to issues like worn piston rings, leaking valves, or other mechanical problems, the engine will fail to start when being cranked. The other options are not directly related to the failure to start due to compression issues.
High cetane number (A) refers to the fuel's ignition quality, not the engine's compression. Low lube oil viscosity (C) or high lube oil pressure (D) may impact engine operation, but they do not directly cause a failure to start due to insufficient compression.
Related Questions
#441 Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount? #442 High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by_______________. #444 If an auxiliary diesel engine equipped with an electric starting system cranks very slowly after repeated attempts to start, the cause could be a/an _______________.#445 Which of the following statements describes what will occur if the annular spaces, indicated by the letter "K" of the device shown in the illustration, became restricted? Illustration MO-0112 #446 As shown in the illustration, which of the following conditions would be responsible for a "low-pressure in oil outlet" alarm to be indicated? Illustration MO-0127