'91 Teg has too-high NOx to pass Virginia emissions.
Car is running lean (CO is very low).
Could timing need to be advanced? Could it be an O2 sensor. Any thoughts?
Thanx
'91 Teg has too-high NOx to pass Virginia emissions.
Car is running lean (CO is very low).
Could timing need to be advanced? Could it be an O2 sensor. Any thoughts?
Thanx
my nox was too high and i passed by retarding my timing. everything else was good though.