Thursday, August 26th, 2010 AT 6:11 PM
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.

