All posts tagged: Smog Test

Passing California Smog Test – Replacing the Catalytic Converter and Oxygen Sensor on an Alfa Romeo Spider Veloce Part 2

Having looked at the high HC, CO and NO numbers on the last smog test two years ago I decided to replace the catalytic converter on a 1986 Alfa Romeo Spider Veloce (see Motorphile 2016/02/24) before taking it in for a biennial test.  As the unit was clearly rattling when shaken I figured it was time to replace. Now there are so called “49 State” catalytic converters and then there are the 50 State or CARB cats that are legal for use in California.  Often the California legal catalytic converter can cost about double the price of the 49 State model for the same car.  Forget about trying to save money if you live in California by buying the cheaper 49 state model.  First,  the California Air Resources Board (CARB) requires that all legal California model cats be stamped “D-193-88″  which is the State Executive Order (EO) mandating the higher performance converters.  They will also have a unit number, manufacturing date and arrow indicating air flow.  If the converter does not have these large (5”) …

Passing California Smog Test – Example of an Alfa Romeo Spider Veloce Part 1

In California an older car built after 1975 has to pass a rigorous smog test every two years. If your car does not pass you generally cannot register it for operation on the street.  That year is fixed and means that as time goes on classic cars built after 1975 could be many decades old and will still need to pass the smog test for registration in California.  If a car fails the test you have to repay the $50 or more fee for the test agfer you fix the problem and retest the car. Worse though – that fact is listed on the record and even if the problem is rectified the past failure of the car and could raise concerns with future purchasers.  It is wise to take a close look at the numbers of your test certificate each time you test and note if you are creeping towards a fail.   If so you should take action before two years are up and you need your next test.  For many people, this testing …