Rattling on startup.
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Joined: Aug 2012
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From: Sacramento
Rattling on startup.
What's going on guys. I searched the forums and found some threads that had questions similar to mine but I wanted to be exact. I have the same rattle as the one heard in this video. The rattle is temporary. I just recently put a new clutch and fly wheel in and a used engine. I had the sound before and I still have it now. Any suggestions or help pinpointing the problem would be great. I want to know if this is something I need to worry about. Thanks
Last edited by 3Ni5M0; May 13, 2014 at 01:47 PM.
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Joined: Mar 2011
Posts: 510
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From: Pflugerville,Texas
From a thread a few threads down:
Johan, if you have a VQDE engine (2003 to 2005) this is not an uncommon problem and there is a TSB from Nissan explaining it. On a cold start one of the intake VTC (valve timing control) sprocket units can make a rattling sound for one second until it re-indexes. My 2004 did this every now and then for the ten years I owned it. I never bothered to replace it, as apparently it causes no long-term harm. I couldn’t find the 350Z TSB, but here is one for a Maxima that is similar.
http://maxima.theowensfamily.com/tsb/ntb03-060.pdf
This engine has a timing chain guide that tensioned by oil pressure, but it also incorporates a ratchet mechanism to keep it from losing tension when the engine is turned off. A problem with this unit will cause a more pronounced marble-in-a-can knocking sound that persists for longer than a few seconds at start-up.
http://maxima.theowensfamily.com/tsb/ntb03-060.pdf
This engine has a timing chain guide that tensioned by oil pressure, but it also incorporates a ratchet mechanism to keep it from losing tension when the engine is turned off. A problem with this unit will cause a more pronounced marble-in-a-can knocking sound that persists for longer than a few seconds at start-up.
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