Okay, here are the results from all of the emission tests to date:
10-5-07 Vehicle Purchased:
Test RPM CO2 O2 HCmax HCmeas COmax COmeas
Idle 733 11.9 4.7 120 289 1.00 0.18
2500 2598 15.2 0.0 180 1318 1.00 0.40
Result - GROSS POLLUTER/GROSS POLLUTER
Followed this test with a valve adjustment
10-15-07 Follow-Up Test
Test RPM CO2 O2 HCmx HCmea COmx COmea NOmx NOmea
15mph 1803 14.9 0.06 118 65 0.68 0.04 999 1704
25mph 1930 14.58 0.00 98 327 0.87 0.69 859 905
Result - FAIL/GROSS POLLUTER
Followed this test with:
R&R Cylinder Head
Complete Valve Job
Mill Exhaust Valves
New Camshaft
10-22-07 Follow-Up Test
Test RPM CO2 O2 HCmx HCmea COmx COmea NOmx NOmea
15mph 1894 14.9 0.07 118 28 0.68 0.19 999 1029
25mph 1935 14.9 0.07 98 27 0.87 0.16 859 1043
Result - FAIL/FAIL
Followed this test with new high flow catalytic converter
11-23-07 Follow-Up Test
Test RPM CO2 O2 HCmx HCmea COmx COmea NOmx NOmea
15mph 1893 15.1 0.07 118 15 0.68 0.01 999 389
25mph 1919 15.1 0.03 98 12 0.87 0.01 859 196
Result - PASS/PASS
It has been two years and needed a new test to keep a current registration. I had the oil changed one day prior to this test.
07-25-09 Test
Test RPM CO2 O2 HCmx HCmea COmx COmea NOmx NOmea
15mph 1986 15.1 0.1 118 52 0.68 0.1 999 1644
25mph 1959 15.0 0.1 98 42 0.87 0.07 859 744
Result - FAIL/PASS
Following this test I replaced:
EGR Intake pipe gaskets
EGR Gasket
Cleaned the EGR Valve
Cleaned the EGR Intake Tube
Ran a can of fuel system cleaner
08-22-09 Follow-Up Test
Test RPM CO2 O2 HCmx HCmea COmx COmea NOmx NOmea
15mph 1969 13.9 1.6 118 62 0.68 0.00 999 3102
25mph 1939 14.5 0.8 98 42 0.87 0.00 859 2455
Result - GROSS POLLUTER/GROSS POLLUTER
The gas tank still had some of the fuel system cleaner in it when this test was run.
Things done since -
Ran a can of SeaFoam in the fuel tank and crankcase.
To do -
Test check the vacuum lines and EGR.
Test check the EGR Temp Sensor.
Test check the Oxygen Sensor.
Note: I have service records going back to day one and the O2 sensor has never been replaced
As a last option I will replace the Cat.
Thoughts? <img src="/forums/images/graemlins/confused.gif" alt="" />
