marmitethecat Posted October 22, 2013 Share Posted October 22, 2013 Hi , need your help and wisdom! i have a late 300 rev up, 07 plate when i first start up from cold after been stood for a while i get a small rattle top end, goes away after 2/3 seconds and fine all day after chain tensoners? i did a oil change recently and it didnt do it for a couple of times , but doing it again now any suggestions thanks Graeme. Quote Link to comment Share on other sites More sharing options...
Jay-350z Posted October 22, 2013 Share Posted October 22, 2013 Are you running decent oil? But I world recommend getting the chain checked. Quote Link to comment Share on other sites More sharing options...
marmitethecat Posted October 23, 2013 Author Share Posted October 23, 2013 5w 30's fully sinthetic Quote Link to comment Share on other sites More sharing options...
notfub Posted October 24, 2013 Share Posted October 24, 2013 Check and double check the oil level first. Hopefully it needs a little top up after your recent oil change. Quote Link to comment Share on other sites More sharing options...
Neilp Posted October 24, 2013 Share Posted October 24, 2013 Normal Quote Link to comment Share on other sites More sharing options...
mattross1313 Posted October 24, 2013 Share Posted October 24, 2013 I read somewhere a while back (IIRC it was ZedmanAlex). I think this is to do with the cam-chain tensioners. On first start up they are slightly loose but the engine pulls them tight during the first 1-2 seconds. Worth getting checked, but mine also does this on cold start up. 1 Quote Link to comment Share on other sites More sharing options...
peteman35 Posted October 24, 2013 Share Posted October 24, 2013 Fuel damper? Quote Link to comment Share on other sites More sharing options...
marmitethecat Posted October 24, 2013 Author Share Posted October 24, 2013 will check oil top up situation , and run it for 400- 500 and do oil again poss?? i think having such a high fast idle doesnt help the situation !! G. Quote Link to comment Share on other sites More sharing options...
20james11 Posted January 3, 2014 Share Posted January 3, 2014 Hi, my 350 does the same on cold start up, I think the high start up rpm doesn't help either, wondering if anyone has had the start up rpm lowered when having an uprev? Or is it possible to do that? Cheers James Quote Link to comment Share on other sites More sharing options...
glrnet Posted January 3, 2014 Share Posted January 3, 2014 Unlikely to be fuel damper as they are usually noisy all the time once they start to fail. Had an Uprev and idle reduced slightly but still get the rattle every once in a while on start up from cold. Quote Link to comment Share on other sites More sharing options...
GIXXERUK Posted January 3, 2014 Share Posted January 3, 2014 Isn't it just the hydraulic tappets losing oil as it has stood, then takes a few seconds on a cold start for the oil to pump to the top of the engine ? Quote Link to comment Share on other sites More sharing options...
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