The car cranked and had a vacuum leak that I tracked to the O-ring on the vacuum adapter for the brake boost / AC. Nows it runs pretty rough at low idle (1000rpm on stock tach) but no noticeable vac leak. It sounds much better if I run it up to 2000rpm. I still see that If I leave it at low idle it immediately throws a P0302 (misfire cylinder 2). I have also seen P0171 (engine lean). Often the MIL at low idle is a blinking MIL, to clarify the MIL shows up in about 20 - 30 seconds.
If i run it up 2000rpm it will not light up the MIL it will run for minutes or even a trip to the local Advance Auto to get new plugs and wires
Just to clarify I did the following on the "rebuild". Felpro lower manifold gaskets, Dorman UIM with provided O-rings used on the injectors, and a new MAP sensor. I also cleaned up most of the visible goo in the intake and TB. I avoided the MAF area though.
Note : I only have a cheap reader and not a scan tool.
Any thoughts where to go next.
Swap injectors or swap coils and see if the cylinder number for misfire moves?
Thanks in advance for the time