Guess who is NOxing at your tailpipe? Test your skills with this quick quiz!
What gasses are reduced by the EGR?
The potential cause of an EGR circuit fault DTC could be clogged passages.
NOx gasses are created __________
with retarded ignition timing
with advanced ignition timing
with decreased compression
during an intake manifold vacuum leak
Insufficient flow DTC can be caused by all of the following EXCEPT
stuck closed EGR valve
non-functioning vacuum solenoid
stuck open EGR valve
partially plugged EGR pipe
Cam phasing can be used to reduce NOx emissions.