1993 Subaru Justy "ppm emissions test" Questions

Emissions Test My NO level was over 1000 ppm at the 15 mph part of the test but about 700 at 25 mph - why? Iread that retarding the timing would reduce NO emissions. Mine is at 6 BTDC with a spec of 3

...PPM) max 711 meas 2 run the fault codes to find the faulty sensor sensors that control the exhaust emissions are the HO2S ( heated oxygen sensors in the exhaust manifold/s the O2 sensor ( oxygen ...

...ppm), Idle emissions 819 HC (ppm). Runs good , but has hesitation when first acceleration like worn timing chain and gears. and boy does it stink like sweet burnt oil. Where should I start. possible ...

TEST FAILED 15MPH RPM 1862 / %CO2 MEAS 14.2 %O2 MEAS 0.0 / HC(PPM) MAX 61/ AVE 27 - MEAS 105 / CO(%)MAX 0.51/AVE 0.10 /MEAS0.91 / NO(PPM) MAX 490 / AVE. 165 / MEAS 292 RESULTS FAILED 25MPH /RPM 1911 /

...260E has no EGR valve and CA emission test failed NOX. What's next? All other emission test measured average or better. NOX was 1139 ppm at 15 mph and 918 ppm at 25 mph. It does have an EGR ...

ppm TAILPIPE EMISSIONS failure Toyota Sienna SE yr. 2000 3.0 L, 6cyl. fails emissions ASM2525 test. FAILS NO ppm limit = 578, Reading = 2555 Passes HC ppm limit = 52, Reading = 17 Passes CO% limit = 0

...PPM, then the vehicle will fail the emissions test and the vehicle must be serviced and made to meet the standard. it means that your car is feeling any missions could be something as simple as that ...

Test Results: 15mph - RPM = 1902 %CO2 = 14.3 %O2 = 0.6 HC (PPM) = 160 (max 66) CO (%) = 0.74 (max 0.57) NO (PPM) = 3198 (max 487) 25mph - RPM = 1685 %CO2 = 14.3 %O2 = 0.6 HC (PPM) = 174 (max 49) CO (%

...test failed HC (PPM) HC (PPM) MAX 64 Ave 28 MEAS 81 failed what is the issue i can be, only 2 things, or both. 1: engine running way too rich. 2: dead cat. (both happens, too) replace the cat, might ...

...the HC ppm reading for emissions change the oil just prior to test, run the engine at very high idle just prior to test to super heat Catalytic converter, this will lower reading as much as 100