Hola. First time long time.

So I just picked up a 1987 w124 300E. It’s been sitting for a few years due to a misfire. Older woman owned it and her husband just got her a W212 diesel instead of dealing with it. Body is immaculate and engine looks clean for its age and mileage so I picked it up for 800 bucks and towed it home. Pulled the plugs and got a new battery. I went ahead and ordered a new filter and a new coil. Doing an oil change and getting new plugs. I figure I also need to drain the fuel before starting. Anyway. A few questions.

The hose going from the top of the air filter to the valve cover looks sort of rough but even though it looks like it should be some kind of pcv setup I don’t see a valve. Is this kosher? Also it looks like there is supposed to be a hose coming off of that hose (pics below) and there a wire that seems to be hanging loose below it. Any idea what that is?

Plugs look rich which points to potential ignition problem.

My plan is to change oil and put fresh plugs and a new battery and coil in. Change the fuel filter and try to start it. Then run some injector cleaner through it and see if that helps. If not I’ll check fuel pressure and potentially replace pumps. Then check and refurbish or replace injectors.

Not familiar with these cars. I have a vintage Porsche and an old Land Cruiser so I know my way around engines. Please let me know anything else to check.

Thanks!