Check the Crank position sensor. If that sensor is sending bad signal it will cause the coil pack to fire at the wrong time and that will give you the misfire detected problem. Also, check the injectors, if one isn't firing like it should your getting no fuel in the cylinder.
the crank saft sensor did not fix it, know what?
If the Crank position sensor is good and the coil pack is good then the timing has to be off or the injectors are malfunctioning. Check your injectors, make sure they are clean and functioning properly. Double check the wiring for the coil pack(s) and plug wires again to make sure they are functioning and correctly connected in the proper firing order, you also need to check the Spark plugs to make sure the plugs are properly gaped.
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