u/mineplex360

ive replaced plugs, valve covers, swapped known good coils from another engine, tried fuel inj. cleaner, different octane fuels, everything. i am hesitant to spend $$$ on a set of fuel injectors. recently i also replaced my timing chain. im confident in my work, but im starting to second guess myself given that nothing else has fixed it. would the cam/crank angle sensors be able to tell on their own if a bank is too far advanced/retarded? sometimes the misfire just goes away for awhile, sometimes its barely noticeable and sometimes its struggling to idle