HC means unburnt fuel and usually a misfire indicator. CO is indication of how rich it is running. And in this case pig rich.. noticed your fuel mileage is probably crap right now. From your results it looks like a dead cyl either compression, ignition, fuel related.
I would do a cylinder balance test and check for the rpm drop. Either by pulling a plug wire one at a time or an injector. (plugs should be ok and easier 22r/re)
If you find one doesn't do much than do a leak down test after that.
If you have a vacuum gauge your going to want to run check cranking vacuum and idle vacuum. idle you should 17-22in HG. i forget wtf cranking should be doing.
So
Cylinder balance test
Vacuum at idle
Compression and leakdown
Also to make sure your cat is working looking for atleast a 100degree difference between inlet and outlet
Post all your numbers from the test and i'll give you the lambda and AFR.
Cylinder Balance test they all dropped exactly the same. I set the idle at 1000rpms and they all dropped to 750rpm and stayed there steadily.
Vacuum at idle was 17in. on the dot.
Compression - I couldn't do a leakdown test so i did compression.
Cylinder 1- 142psi
Cylinder 2- 139psi
Cylinder 3- 145psi
Cylinder 4- 138psi
nothing there seems out of the ordinary....
I havent gotten a chance to test the temp of the cat because I don't have a way to yet, but that couldn't be the only problem right?
