My car suffered from high emissions and was a test failure. This was as a result of a dirty MAF (mass air flow) sensor. Often dirty or faulty sensors result in weak mixture and an engine running too lean with bad idle and lacking in power. My car seemed to be running fine! But with high emissions. This wasn't very clear in the videos I watched, so I added my own to try and help others with similar problems. P
ps. 24th July 2012 The car passed the emissions test with no other changes
