New to the forum and I imagine this has been discussed, but....
Bought a 1984 GL 1.8L from a guy for a little bit of nothing. $400. He did the Weber conversion and had problems passing emissions in Colorado.
HC was a hair over limit Fail 5.8 actual limit 5 Idling a little rich
CO was twice the limit Fail 122 actual limit 55 Running very rich
NOx was well below limit Pass 1.2 actual limit 5 Catalytic converter is good
Doing an initial check, it's due for a tune up, plugs, cap, rotor, coil. Conversion seems to have been done right and no vacuum leeks are present.
Inspecting the carb, choke was way off and the idle a/f adjustment screw was very rich to the point the car would die at idle when warm.
I set the choke, a/f, idle and timing. Idles good and doesn't die anymore. I did notice when I opened the carb both the main primary and secondary jets are a 130. Which seems rich at altitude and may be causing the car to fail the CO miserably. Looking at his failed emissions, I think it would currently pass the HC and NOx with the a/f and choke adjustments, but the CO is so high that I'm thinking the only way to lower that would be to go down on main jetting, possibly a 120 primary and 115 secondary. I'm also thinking of lowering the floats... And a tune up.
Driving the car it seems to bog and take a long time to gain RPM. It's been years since I've messed with carbs, and when I did, I was at sea level.
On a good note, the car doesn't smoke a bit.
Any opinions are welcome!
Edited by winmag4582001, 15 November 2017 - 01:31 AM.