More codes after fixing I thought I fixed the missfire

Swap the wires on the fuel injector and see if the code then switches to that cylinder. Could be a bad injector.

CODE 301 IS #1 MISSFIRE 300 IS RANDOM MISS FIRE 201 IS INJECTOR FAULT . I WOULD START BY SWAPPING # 1 INJECTOR WITH SAY # 3 AND SEE IF THE MISSFIRE MOVES TO #3 IF SO REPLACE INJECTOR, IF NOT THERE COULD BE WIREING ISSUES

replace distributor cap and rotor.could have faulty spark plug or wire.could have faulty fuel injector to cylinder 3. or injector wiring has a short.PCM faulty not firing injector number 3.could have mechanical problem like burned out valves intake manifold leak near cylinder 3.

the misfire fault (p0300 for random misfires or p 0301-08 for individual cylinder misfires) is seldom as a result of plugs
It is more likely from
low fuel pressure ,pump , EVAP not venting ,dirty injectors , wiring to the injectors , injector control, or ECM
simple fix is to put a can or 2 of injector cleaner in the tank and go for a good drive
next is to replace the fuel filter
more involved is to have the fuel pressure tested to check for pump and pressure regulator operation

move the ignition coil to another cylinder and see if the miss fire moves. If so replace that ignition coil. If the miss fire stays on that cylinder it is more likely the fuel injector. Was their carbon on the spark plugs when you removed them? This is indicative that the fuel injector is gummed up.

honestly it sounds like you have a bad computer. there is a constant 12 volts going to each fuel injector and the computer momentarily grounds each fuel injector to activate, the black smoke is from too much gasoline and the missfire is probably from the injector either hanging open or being held open electricaly. next time it starts to missfire on number 1 cylinder try taking a stethiscope or long screw driver and put it on #1 fuel injector with the engine running and see if you hear a clicking sound. If not try unplugging the #1 Fuel injector. this won't fix the missfire but you can see if the black smoke clears up. if the smoke doesn't clear up with the injector unplugged and you are sure its # 1 cylinder thats missing, replace #1 fuel injector.

You will first need to determine what is causing cylinder number one to missfire. Could be a clogged fuel injector, bad ignition wire, bad spark plug, burnt/bent/stuck valve, cracked cylinder head, bent push rod, collapsed lifter, flat cam shaft. I could keep going, point being there is no easy fix unless we start eliminating possible causes. You having bad gas I would lean more towards the injector or the spark plug.

misfire only comes from the coil packs.. replace them

some time when you take off the intake manifold you have to replace the upper gasket and i would take it apart again to make sure you have the gasket line up try these websites www.autozone.com and www.alldatadiycom and the other one is www.taurusclub.com

misfire :-------- try checking your 02 sensors /fuel pump and filter.

for 51 cylinder misfire :---
Change the coil. Period. Very easy to remove from the vehicle if it's a 4 cyl. Follow that spark plug wire from the spark plug to the other end. What it's attached to you should replace
for 54 cylinder 5 misfire :---First you have to eliminate the most obvious problems, like spark plug and spark plug wire. If you replace those and you still have a misfire, then it's a good idea to look for a vacuum leak in the intake manifold