Pulled codes 14, 42 and 43. CEL flickers on rarely but I do see it flash on for a second or two. Plugs look fairly clean, possibly a little lean if anything. Tailpipe is completely black with soot. Idles/misfires (sometimes severe) when warm for a while. Higher I get the rpms up I feel like I've lost power and feels like it's struggling to go.

I know there was a site that explained all the codes out which I can't seem to find but pretty sure 14 has to do with ignition not being recognized and 43 something about the starter.

Anyone have any ideas I can check before I get a diagnostic on it?