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Discussion Starter #1
Hello guys, I had an emission test on my 82 gtv2.0 (alfetta-gtv) equipped with, twin Dellorto DHLA 40mm, sport cams (don´t know specs since they came with the car), Ram flo sport filters (400 cfm), Mallory 6AL ignition box (same as MSd but digital), accel wires and superstock coil, new cap and rotor. Here are the readings I got:

at idle (1000rpm):
CO: 5.27%
CO2: 9.48%
02: 3.65%
HC: 2346ppm
Lambda: 0.947

at 3000rpm:
CO: 0.66%
CO2: 13.92%
02: 1.36%
HC: 515 ppm

I need your help regarding this issue. The HC levels are way TOO high and I think this is due to the carbs that are giving too much fuel. The guy told me that the idle jets are uncorrectly set, but I don´t think so.The car doesn´t have a rough idle, but maybe the mixture is too rich at idle and I´ll have to lean the mixture with the idle mixture screws. Am I correct? please I need help here. I don´t have a synchorometer and never have done this job. Is it easy with that tool? or is there another way? I am a newbie Alfa, since I am going to have the car 1 year soon.

Thanks in advance.

ps. The car doesn´t have anti smog equipment since it is an Euro version.
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