My 78 Pinto with 2.3 and 4 spd just failed emission testing (required in Colorado). I got readings of HC/ppm of 2000 at 2500 rpm (over 400 is a fail) and CO% of 11.41 (over 1.5 is a fail), not much better at idle... she is running very rich, probably not just a fiddling with the idle air screw if it fails at 2500 rpm, which is set pretty lean now. The car does foul plugs quickly, running on three until it warms up, especially when cold, but does not visibly smoke. The car has 52,000 original miles. I fully rebuilt my original carb, which shows no real signs of previous tampering. Does anybody know the correct jet specs for the main versus secondary setup, as I cannot guarantee anybody before me may not have accidently swapped the jets. I know the primaries are smaller than the secondaries, according to the book. The choke does appear to be operating correctly, timing is spot-on according to specs. Half the emission parts and all vacuum hoses have been replaced, the egr valve cleaned and tested. The car really seems to run pretty well, once warmed up. Any input regarding possible causes is truly welcome. Thanks!
Don