Answered

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The noises that you could hear during a cranking sound diagnosis include all of the following EXCEPT:

a. The clunk of a spun crankshaft bearidg noise.
b. The engine revving and starting up.
C. An uneven cranking sound that a low-compression cylinder gives.
d.
A fast cranking sound from a no-compression condition that is due to bent valves caused by a broken timing
belt.

Sagot :

A good source of insight to the technician about an engine's condition is the noises coming from the engine

The correct option that gives the exception to the noises heard during a cranking sound diagnosis is the option;

  • b. The engine revving and starting up

Reason:

During a cranking sound diagnosis, the engine need to be disabled  to

prevent it from starting, which is done by removing the relay for the fuel

pump, which will prevent fuel from potentially hydro-locking the engine

The key is then used to crank the engine, during which the cranking sound

is listened to

The sources of the noises produced includes;

  • The starter is misaligned
  • The clunk of a spun crankshaft bearing noise
  • The sound given by a low compression cylinder, which is an uneven sound
  • The no compression condition fast cranking sound, due to broken time belt that results in bent valves

Therefore;

The exception to the sounds heard during a cranking sound diagnosis is; The engine revving and starting up

Learn more here:

https://brainly.com/question/18457057

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