I got a 01 accord that is throwing codes for valve adjustment and o2 replacement. It has a misfire in all cylinders when running. Ive replaced 02 sensors and got new spark plug wires. Codes say replace coil packs. Before I do any suggestions? I might try to see if it's the map sensor. Or something similar to see if that could be the problem. Any ideas on possibe solutions much appreciated.

 

Codes do not tell us what parts to throw at the problem. They tell us what area to TEST for problems.
Fuel pressure?