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dont know if you have solved this, i have a vq in my s14 with the EXACT SAME SOUND it speeds up with revs, ive checked compression and its fine, this weekend im doing a mobil 1 oil change and adding a quart of lucas to see what happens, i at first thought it was the exhaust manifold, but it checked out, my ticking is coming from the back of the head on bank 2 (us drivers side) and thats where it seemed to be on yours in your video, this sound drives me effin nuts!!! let us know if you solved it or not BTW i own an 04 z33 and it doesnt make this noise so its not common, i work at a nissan dealer in the parts dept and am constantly in the shop talkin, we dont ever see them comin in like this, and the vq has solid lifters not hydraulic so its not like its not pumping up, someone up here has suggested the possibility of a cracked valve spring from bouncin it off its limiter
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