High NOX on smog test | Ford Explorer Forums - Serious Explorations

  • Register Today It's free!

High NOX on smog test

encoly

Member
Joined
October 8, 2015
Messages
16
Reaction score
2
City, State
San Diego
Year, Model & Trim Level
2004 explr
Failed smog test for first time due to high Nox. Is this an indication of plugged passages in the EGR valve. Vehicle is a 93 2.4 L all still original under the hood. Well almost original plugs and wires changed once, 180000 miles.
 






Back
Top