I failed the CA smog test with CO percentages of .47 (15 mph) and .46 (25mph) and then got it tuned up - timing and spark plugs is all I know they did. Then I failed again with CO percentages of .43 and .39. I just have to get to .35 and .34. My mechanic say we need a new catalytic converter - around $400. Do I have any other options? For what it's worth, the car had been running for 20 minutes prior to both tests.
Aug 26, 2010 at 6:11 PM