After having experienced performance loss on and off without the error light comming on for a long time, the light came on and Nissan read the error it had logged. It turned out I had a bad coil, so they changed the coil pack on cylinder 2. It seemed like that help'd for a while, but the problem returned within a week!
when the car has been running for a while and the engine is well heated is sits very un even at idle. its only running on 5 cylinders.

The Nissan tech's told me it has to be an electric error but what do you guys think can be the problem?

I'm getting my FI parts within the next 14 days, but I wont install it before I've had this issue fixed

 

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Did you find out the problem > Im getting a misfire on #2 cyl. also . We replaced the coil pack and all the spark plugs . The misfire comes and goes away . Im going to check for a short some where . ANd then pull the injector and have it checked

It would be nice if you found the problem and shared the fix !!!!!