My 1990 Chevy Suburban Failed smog due to HIGH CO(%)?

Heather

New member
Joined
Nov 11, 2008
Messages
10
Reaction score
0
Points
0
Smog results were...

@15mph - RPM 1753 -
%CO2 Meas 11.8 - %o2 Meas 0.0 -
HC (PPM) Meas 87, Max 134, Average 67 -
CO(%) Meas 5.07, Max 1.34, Average 0.24 -
NO (PPM) Meas 2, Max 1549, Average 681 -

@25mph - RPM 1688 -
%CO2 Meas 11.7 - %o2 Meas 0.0 -
HC (PPM) Meas 82, Max 107, Average 51 -
CO (%) Meas 5.27, Max 1.12, Average 0.25 -
NO (PPM) Meas 0, Max 1514, Average 634 -

This is the second time we've smogged it and it's failed. The first time it failed the visual because of the timing and an unplugged hose. We plugged it in and adjusted the timing from 16 to 0. Now it passes the visual but fails the emissions... What to do? Thanks
 
Back
Top