'90 XJ 4.0/Automatic - 195K
-1 yr since last tuneup - plugs, rotor, cap
-new vacuum lines
-1 yr old backyard rebuild on the head (clean up, valve lap, new seals)
-1 yr old set of rebuilt ford injectors
-1 yr old O2 sensor
Passed Texas emissions with flying colors but got me thinking "what is normal look like". Anyone have an idea what these things did when they came out of the factory? Here is how my Jeep tested.
High Speed
HC - 48
CO - 0.16
CO2 - 14.5
O2 - 4.3
NOx - 235
Dilution - 14.7
Low Speed
HC - 70
CO - 0.19
CO2 - 14.5
O2 - 7.3
NOx - 273
Dilution - 14.7
-1 yr since last tuneup - plugs, rotor, cap
-new vacuum lines
-1 yr old backyard rebuild on the head (clean up, valve lap, new seals)
-1 yr old set of rebuilt ford injectors
-1 yr old O2 sensor
Passed Texas emissions with flying colors but got me thinking "what is normal look like". Anyone have an idea what these things did when they came out of the factory? Here is how my Jeep tested.
High Speed
HC - 48
CO - 0.16
CO2 - 14.5
O2 - 4.3
NOx - 235
Dilution - 14.7
Low Speed
HC - 70
CO - 0.19
CO2 - 14.5
O2 - 7.3
NOx - 273
Dilution - 14.7
