Hey all!
I’ve got a 92 Tb42e gq that isn’t firing all cylinders (I’m pretty sure)

It’s not so much as a missfire but just not firing full stop. I’ve replaced plugs, leads, dizzy cap and rotor, now I’m starting to get worried it might be a bit of a deeper job._.

Some other random info that’s I’ve found along my headfuck journey:
A spark plug was cracked length wise down the ceramic
Majority plugs were rusted(only at the hex and maybe3-4 threads)
Nasty looking vacuum lines that I’m replacing as I find poor ones
Put a whole new in tank fuel pump in recently

I’m leaning towards a compression issue or an injector is cooked but would love other views on what it could be, can provide photos of whatever