Author Question: Two technicians are discussing clogged EGR passages. Technician A says clogged EGR passages can ... (Read 132 times)

Ebrown · **on:** Jun 22, 2018

Two technicians are discussing clogged EGR passages. Technician A says clogged EGR passages can cause excessive NOx exhaust emission. Technician B says that clogged EGR passages can cause the engine to ping (spark knock or detonation). Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Question 2

NOx readings at idle should be less than ________.

A) 1 ppm B) 100 ppm
C) 10 ppm D) None of these is correct