When i first took my dodge spirit 2.5 3 cylinder for inspection, i passed for CO but failed for NO and HC. I changed plugs, going one step hotter, replaced my map sensor, my egr valve and tubes going to it and the map, my egr switch, and my gas filter (which may have been plugged as the white spark plugs indicated the car was running lean). I reinspected and now passed for HC but my NO reading went up significantly, so i now fail for a bigger spread. Previously i barely failed, very close to the max. Before i was in the 1200 range and now am in the 1900 range on NO reading. How should i attack this problem. please email snipped-for-privacy@hotmail.com
- posted
18 years ago