Thanks for all the info.
The trunk lid is not sealing. The hinge is bent. Definitely not sealing there. Water could be leaking here. Also the window scrapers are old and a bit crusty. Probably not sealing. The spare tire wells in the trunk are missing. The exhaust pipe is s shaped.
The fuel pressure is correct.
But I do believe it’s running a bit rich.
Do have a method to adjust the CO knob on ECU? I don’t have a CO meter and one that reads low enough is pricey.
I will check for leaks in the exhaust pipe, kick panel vents, oil leaks and various seals soon.
I recently replaced the air intake/exhaust manifold gasket. A few leaks there.
Thanks