A Technician Repaired a Cold-Start and Hard-Starting Problem by Replacing

question 27

Multiple Choice

A technician repaired a cold-start and hard-starting problem by replacing the secondary ignition wires and spark plugs. After the repair, the vehicle failed an emission test for high CO and HC levels. Technician A says a restriction in the fuel delivery system such as the fuel filter could be the problem. Technician B says that the engine oil could be contaminated with fuel. Who is correct?

• A) A only
• B) B only
• C) both A and B
• D) neither A nor B

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Definitions:

Visual Spectrum

the range of wavelengths of electromagnetic radiation visible to the human eye, generally considered to be between 400 and 700 nanometers.

Electromagnetic Spectrum

The range of all types of electromagnetic radiation, which includes, among others, radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Low Frequencies

Refers to sounds or signals that have a relatively small number of cycles or oscillations per second; in audio, it typically describes bass sounds.

Basilar Membrane

The basilar membrane is a key structure in the cochlea of the inner ear, playing a crucial role in the process of auditory transduction by vibrating in response to sound and facilitating hearing.