hi I have this micra that has covered only 27000 miles and keeps coming up with codes p0340 cam sensor and p0011 cam sensor timing the sensor has been changed by the dealer, but do these engines still have the timing chain promblems. Also had a few of these that wont start, buy that you turn the key and nothing happens can be there for few minites keeping turning the key then all of a sudden it starts, its not the starter motor as I have jumped the starter and it works every time. ray