vehicle is producing a sharp, metallic rappingsound originating in the upper portion of the engine.It is most noticeable during idle. Technician A diagnosesthe problem as piston pin knock. Technician Bsays that the problem is most likely a loose crankshaftthrust bearing. Who is correct?a. Technician Ab. Technician Bc. Both A and Bd. Neither A nor B

vehicle is producing a sharp, metallic rappingsound originating in the upper portion of the engine.It is most noticeable during idle. Technician A diagnosesthe problem as piston pin knock. Technician Bsays that the problem is most likely a loose crankshaftthrust bearing. Who is correct?a. Technician Ab. Technician Bc. Both A and Bd. Neither A nor B

Automotive Technology: A Systems Approach (MindTap Course List)

6th Edition

ISBN:9781133612315

Author:Jack Erjavec, Rob Thompson

Publisher:Jack Erjavec, Rob Thompson

Chapter9: Automotive Engine Designs And Diagnosis

Section: Chapter Questions

Problem 6ASRQ: A vehicle is producing a sharp, metallic rapping sound originating in the upper portion of the...

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A vehicle is producing a sharp, metallic rapping sound originating in the upper portion of the engine. It is most noticeable during idle. Technician A diagnoses the problem as piston pin knock Technician B says that the problem is most likely a loose crankshaft thrust bearing. Who is correct? Technician A Technician B Both A and B Neither A nor B