 Some advice please, High Emissions CO |
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| DavidSweden |
 Jul 8 2021, 04:02 AM
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Member  Group: Members Posts: 479 Joined: 8-June 14 From: Sweden Member No.: 17,452 Region Association: Scandinavia  |
This morning I took the car for the government road worthy test and it failed due to high CO emissions . (IMG:style_emoticons/default/headbang.gif)
The CO value measured at the tail pipe was 6,2% it need to be under 4,5% (not sure what the units are something they call CO/K value) If members have any advice on how to reduce the CO it would be appreciated, I have to fix it by the 9th of August otherwise I cant drive the car (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/headbang.gif) The engine is a 2l with 20556 PC´s and running D Jet Thanks in advance |
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| JamesM |
Jul 8 2021, 10:05 AM
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Advanced Member Group: Members Posts: 2,023 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
As has been mentioned, could be slightly rich, or at least reflective of not burning a all the gas properly though it is also worth noting I have had similar emissions failures just from having older gas in the tank when running the test.
What RPM was the test run at? I would 1. Make sure you have a fresh tank of gas and your air filter is clean 2. Make sure your engine is as warm as you can get it before testing (if the head temp sensor isnt fully hot it will richen your mixture during the test) If its still failing by that small ammount: 3. a. If the CO reading is failing at idle, dial the idle mixture knob to the left until 1 click before you start getting a lean idle hunt b. if the CO reading is failing at speed, dial the fuel pressure down a bit. There is a possibility you could have an issue with your MPS, but i would start with the above. |
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Posts in this topic
DavidSweden Some advice please Jul 8 2021, 04:02 AM
JOEPROPER Start with the basics. Ignition timing, vacuum le... Jul 8 2021, 07:26 AM barefoot If all else fails, turn down the fuel pressure sev... Jul 8 2021, 07:39 AM ddire333 Get one of these, or the newer version - I check ... Jul 8 2021, 08:48 AM dr914@autoatlanta.com 6.2 is outrageous should be 2 % Immediately chec... Jul 8 2021, 10:26 AM
wonkipop do you have a factory manual?
good for step by ste... Jul 8 2021, 07:17 PM |
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