josh2005 Posted April 22, 2013 Share Posted April 22, 2013 Hey everyone! I've noticed today an annoying tap/rattle coming from the engine of my 2004 350z. It's always been serviced regularly and has 50,000 miles so not too old! I think the rattle only seems to be there at low revs and when idling really and sounds ok when generally driving along but this may just be me not really hearing it over the exhaust, I also haven't noticed any change in performance in general when driving. I didn't know if anyone had encountered similar issues and whether really it is still safe to drive around? Any help appreciated! Quote Link to comment Share on other sites More sharing options...
Keyser Posted April 22, 2013 Share Posted April 22, 2013 Could be anything really, could be the fuel damper they can make a noise that tends to be noticeable at low RPM / idle and work your way up from there, something loose, cam chain tensioner big ends (unlikely they get louder as you rev or as you come off rev) can you get a video and or be more precise as to the area of the engine bay - front back etc? Quote Link to comment Share on other sites More sharing options...
josh2005 Posted April 22, 2013 Author Share Posted April 22, 2013 I would have said it's from the front of the engine near the top really, it's definitely above the height of where the belts are anyway. Sounds as if it's on the passenger side but can't be 100% sure. I am pretty sure it doesn't get louder as it revs but I think as the revs fall to an idle it becomes apparent if that makes sense! I will try and get a video tomorrow. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted April 24, 2013 Share Posted April 24, 2013 Badly fitted new air con belt, running 1 rib out on the pulley: Alex Quote Link to comment Share on other sites More sharing options...
narcotix Posted May 12, 2013 Share Posted May 12, 2013 Did you get this issue resolved then? Quote Link to comment Share on other sites More sharing options...
josh2005 Posted May 19, 2013 Author Share Posted May 19, 2013 Hi all! Sorry i've been away for a while! Yes it was a poorly fitted Aircon belt, it had only been on there for about 100 miles and it looked like it was falling to bits as it was 1 rib out on the pulley as Alex said above, thanks for all the help on this Alex! Quote Link to comment Share on other sites More sharing options...
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