1992 b2200 5spd. fuel injection.

i've gathered, and heard from a few folks that my truck may be having issues getting enough oxygen or something. it essentially feels like it is either being flooded or cholked.

@ 380000 km i obviously have a bit of a sticky valve, and a lash adjuster is ticking away. this is probably contributing to the issue.

anyone know of a way to allow more oxygen to the point of combustion?

ps: used intake cleaner spray, and although it has helped in the past, it seems to be insufficient now

any pointers would be greatly appreciated. have a good labour day canada!