1994 Nissan 240SX "high ppm readings" Questions

HIGH NO ppm READINGS It could be a number of things, but usually, a lean fuel mixture is the culprit. Try replacing all filters and running a fuel system cleaner for a few tanks (i like Lucas Oil's ...

...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

Failed NO ppm Failed emissions test. nO ppm reading too high. probably needs a cat.

wont pass emission ''hc to high" ! HC TOO HIGH NEED FIX FAST 1993 DODGE CARAVAN 3.0 HCPPM LIMIT 144 READING 172 NO PPM LIMIT 965 READING 1024

High HC ppm at 40KM/h. 105 reading (limit is 57) What would be some of the causes for such a high reading? Burning oil...Engine miss. lazy o2 sensor.. dirty maf sensor. check the data on a scanner and

...it failed the part were it said emmissions they said the numbers were to high means that the hc,co2,nox, emissions are too high, you will need the numbers in ppm on the read out to begin ...

...high HC PPM & CO o/o readings on a 1989 ford f-250 460 lack of a tune - up== carb --egr need cleaning adjustment --valves carboned up Over rich fuel mixture or a worn engine . What is the compression ...

...ppm Reading 485 allowed 185---CO% reading 10.50 allowed 2.36 what can i do to reduce numbers? jeep stall upon excellaration....burns lot's of gas.....some smoke out of tail pipe only when i ...

high CO and HC 1992 Toyota Camry Colorado State HC's 4.0537, CO's 29.4854. These readings should be 1.5 and 15.00. Need to fix or get rid of it. The body is in decent shape. The interior is ...

...ppm. The readings has been as high as 5182. I've cleaned and changed the throttle and IAC. Please help! seems like those may be two different issues. check for vacuum leaks and have your fuel psi ...