Colin, Check out this url: http://www.autoshop101.com/forms/h56.pdf
The graph indicates you are running in a rich condition. You have Spica injection, right? So no O2 sensor, only catalytic coverter. So it looks like you need to adjust your mixture manually (or buy an O2 Fuel Mixture Meter Kit to do the adjustment). Good Luck, Charlie '89 Spider > ---------------------------------------------------------------------- > > Date: Wed, 3 Aug 2011 23:46:38 -0700 (PDT) > From: Colin Talcroft <[email protected]> > Subject: [alfa] The Smog saga begins again.... > > I was very disappointed that my 1978 Alfa Spider failed smog in CA > yesterday. I inherited the car six years ago. It failed its first smog (in > my > possession)miserably, four years ago. Eventually, that was corrected with a > new catalytic converter, after which it passed with numbers so low, the man > testing it doubted his equipment. Next smog, two years ago, also passed > fine, > with good numbers. This time, HC very low at 25 and 20 ppm (max allowed is > 415 > and 365 ppm) and NO low at 59 and 52 ppm (max is 1396 and 1256), but CO is > in > the gross polluter range, at 5.04 and 5.03 (max is 1.41 and 1.21). What > baffles me is that this car has had only about 4,000 miles on it since the > new > converter (and a top-end engine rebuild), in September 2005. Why would it > suddenly go so wrong? Any ideas anyone? What strategies would you suggest? > Any > help much appreciated. > > Thanks > > Colin > > ------------------------------ -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
