Honda Civic Questions

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I have a honda civic 2000 lx. The engine light came on right after filling gas "full tank". I also added a bottle of redline fuel injector cleaner before filling the tank. The engine light came on right after i left the gas station, just a few yards away. I stopped and check the gas cap and it is tight, i made sure to hear at least 3 clicks. Also, i took fuel cap off and put back on and rotated it a full circle just to make sure it is very tight and secure. The engine light still on. I used my OBD2 reader, and getting "p0301, p0302, p0303, p0304, and p1399". I looked up the codes and i got:

P0301- Cylinder 1 misfiring
P0302- Cylinder 2 misfiring
P0303- cylinder 3 misfiring
P0304- cylinder 4 misfiring
P1399- Manufactures control Ignition system OR Misfire

A rep at a local auto parts store advised it could be something related to EGR valve having clogged ports. It may need to be cleaned or replaced. Or it can be the spark plugs? What things/parts I should ask the mechanic to check? I am newbie when it comes to car fix. Any advice is appreciated, thank you.
new tyre bushings balljoints aligned yet when driving and the passes over waves in the road it jerks to that side the shocks are a bit bouncy the camber reads05 all wheels the front left shock appears to be a bitlower than the right
Anything besides oil pan, exhaust pipe, and oil pump need to be removed?
I had the front mount engine replace couple of months ago, at the Honda local dealer, now when I turn the engine key on, I hear this sound like roughness last 3-4 weeks and now still hear vibration...
Whenever I put the key into the ignition it won't turn at all and the steering wheel isn't locked or anything but still if I turn the steering wheel while trying to turn the key the ignition won't move like it's stuck or something. I have a spare key that isn't programmed to start the car and that one won't even make it turn so I don't think it's the key.
Rear passenger window works fine when operated from that door. When operating same window from master control It roles down but not up. Used a tester on the switch at master control center and the switch seams to be fine. I can't seam to figure this out, Help please.
But I don't know we're the ac fuse is located. Help please.
starts sometimes, not all the time. when it wont start it turns over no fire. when it does start runs fine. already replaced main relay and!!!
Weak battery or Starter?
I need to pass emissions in about a week so my fines can get dismissed, please help.
still wont start,and still clicks just not as loud.diagnostic shows link error when i no it is plugged in properly.
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