1984 240, LH 2.0. Car failed smog with extremely high CO.

Running symptoms: Idles poorly when the engine is cold and bogs down when I give it gas: the tach will drop to a couple hundred RPM but the engine does not die. Let off of gas and the idle fluctuates between 500-700 rpm. Wet, black deposits and a strong odor of gasoline at the tailpipe. After idling for around five minutes, the car responds normally to throttle and is finally drivable. Idle also smooths out and the exhaust cleans up. Gas mileage is pretty dismal, though, at around 12-13 mpg.

I have replaced: Plugs, wires, cap, rotor, air filter, o2 sensor. Today, I installed a used (tested in another car) air mass meter with a part number ending in -002. The car was warm when I installed the 'new' AMM so I do not know (yet) whether this will solve my cold running problems. Drove for a few miles after installing the AMM and I can't say that I notice much difference.

I also found a tear in the vacuum hose coming off the FPR right where it attaches to the 'nipple.' I removed the hose, cut about 1/4", and put it back on the FPR. I did not see fuel in the hose when I removed it.

If the car is still acting up in the morning, where should I look next? I do not think it is the ECT. It could be the FPR but as stated above there was no fuel in the hose when I pulled it. The failure mode for this ECU (510) is said to be "failure to adjust mixture"....think that could be my problem?