jackkelly Posted April 21, 2013 Share Posted April 21, 2013 Have a re-test for my NCT (Irish version of MOT) tomorrow and it's the last day I can do it or I'll have to do it all over again. I'm after going through four times and it's failed on emissions everytime. It's only after failing on the high idle CO% It passed everything else. The limit is .30% and mine is reading .49% every test I go to. Any solutions. Could I run an adjustable fuel pressure regulator and lean it out just for the test. If so what pressure do I set it to and do I do it with the vacuum hose off or on? If I set it with the vacuum hose off do I block where the vacuum hose goes on to on the intake manifold. Thanks. Quote Link to post Share on other sites
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