I was driving yesterday and my car started to shake violently and it seemed like it was loosing power. Sometimes it would even stall out on me, and when I tried to accelerate up hills it could barely make it. Also while I was at a red light I started to notice some smoke coming from the hood.
I took it to Autozone and their reader came up with "Cylinder 4 Misfire" and they told me i need a tune up. I replaced it with new spark plugs and wires and the same problem is still happening. I also replaced the fuel filter and air filter and nothing has changed except make the check engine light go off, but that has came back on today and now it starts to blink. I took it back to Autozone and they said they have no idea except for to change the spark plugs and wires but I already did that.
Please someone help me!
Cylinder 4 misfire... Please Help! 
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