Hey all.. im new to this forum and just recently bought an 06 murano S and so far im pleased with it but i noticed blue smoke comes out in the morning when started up and i use premiun fuel.. also in the morning it makes a loud clicking noise on the right side for like 2 sec. then it stops.. my friends maxima makes the same noise so was wondering if that needs attn. asap. havent had the chance to do a tune up yet but heard the plugs are hard to take out.. if anyone has done a tune up themselves please list parts..any info would be APPRECIATED!!! Thanx..