chuds1 Posted February 26, 2008 Posted February 26, 2008 Hi All I have a 2003 UK 350Z. I have a problem with a strange noise at idle. I can only hear the noise when i am sitting the car. The noise sounds like it is coming from the engine, its a flapping noise. It is most noticable at idle, on my car about 700rpm and about 20psi on the gauge, flap flap, flap, flap, flap....... The noise is consistent with rpm, as i slowly rev the engine the flapping speeds up. It doesn't sound like a metalic sound more of a flap......sorry its difficult to describe. When i open the bonnet i can't hear the noise everything sounds good, can only hear it when I'm sitting in the car. I'm a bit concerned where the noise is coming from. Has anyone come across this problem before if so i would greatly appreciate your help. Thanks for your help. Quote
Beavis Posted February 26, 2008 Posted February 26, 2008 The only thing i can think of is maybe a shredded drive belt? or a blowing exhaust/manifold. Is there any difference if you depress the clutch pedal? Oh and welcome to the forum Quote
GIXXERUK Posted February 26, 2008 Posted February 26, 2008 Sounds like the fuel damper to me mate Quote
Guest prescience Posted February 27, 2008 Posted February 27, 2008 Could be fuel damper, but noise doesn't usually vary with revs with that issue Quote
chuds1 Posted February 27, 2008 Author Posted February 27, 2008 Thank everyone to your fast responce. Thanks Gixxeruk for the info you attached. I've been out this morning to investigate the fuel damper. Am i right in saying there are two fuel dampers. I can see one when standing at the front of the engine on the left hand side, and the other is behind the engine. Going by the drawing it looks like it should be the one behind the engine. I'm not sure I'm looking at the right one because on my car the fuel damper behind the engine doesn't have a rubber hose coming off of it like in the drawing. Sorry to be a pest but which one am i supposed to be looking at? Also the noise (flapping, thumping) inside the car is quite loud, would the fuel damper cause a noise this loud inside the car. Thanks very much for your help its much appreciated. Quote
chuds1 Posted February 27, 2008 Author Posted February 27, 2008 Sorry meant to say Beavis there is no noise change when the clutch is depressed. Quote
IanS Posted February 27, 2008 Posted February 27, 2008 Mine has a noticable clutch noise at idle that dissapears when driving or pedal depressed. Seem to remember a post about some elements of the clutch plate wearing unevenly? dunno... Could it be something like a back plate on the clutch becoming loose? Keen to hear what folks think as I think I have a less severe case of the same thing! Considering an uprated clutch and flywheel in the near future anyhow! Quote
Guest prescience Posted February 27, 2008 Posted February 27, 2008 This may help a little with diagnosis - there is a sound clip as well? http://www.my350z.com/forum/showthread.php?t=288412 Quote
GIXXERUK Posted February 27, 2008 Posted February 27, 2008 IanS that sounds like the clutch thrust bearing making the noise, they are quite loud on the Z and are a known issue Quote
IanS Posted February 28, 2008 Posted February 28, 2008 Thanks - that'll be it! Its not too bad [esp as i only use my Zed at weekends now ] but in heavy traffic it does sound rubbish. Will a new clutch solve the problem or is a thrust bearing an additional fix? Quote
GIXXERUK Posted February 28, 2008 Posted February 28, 2008 Thanks - that'll be it! Its not too bad [esp as i only use my Zed at weekends now ] but in heavy traffic it does sound rubbish. Will a new clutch solve the problem or is a thrust bearing an additional fix? the thrust bearing is usually replaced at the same time as the clutch as its only a cheap part, gearbox has to come off to do either, so its best to do it all as the £££ go into the labour more than the parts its sits on the arm that actuates the clutch Quote
Zedrush Posted February 28, 2008 Posted February 28, 2008 What happened to Gixxer... he's gone like all intelligent and stuff ??? Quote
IanS Posted February 28, 2008 Posted February 28, 2008 Cheers Gixxer - proper knowledge! Just quoted £500 from my dealer for labour only to do the work. They also wanted £700 to install new manifolds. Confident that they wont be keeping my business! Quote
Beavis Posted February 28, 2008 Posted February 28, 2008 What happened to Gixxer... he's gone like all intelligent and stuff ??? Bit like shire, who overnight could spell Quote
Zedrush Posted February 28, 2008 Posted February 28, 2008 What happened to Gixxer... he's gone like all intelligent and stuff ??? Bit like shire, who overnight could spell IanS the price they quote sounds quite steep is that a nissan garage or general mate? Quote
IanS Posted February 28, 2008 Posted February 28, 2008 Dan Perkins in Slough - they were really good on my last service [just before warantee ran out] and I seem to recall gave a discount as they came recommended from the forum. Clearly make all their cash on labour rates! Quote
Sarnie Posted February 29, 2008 Posted February 29, 2008 What happened to Gixxer... he's gone like all intelligent and stuff ??? Bit like shire, who overnight could spell They all can, thats the annoying thing! For some reason its cool to remove vowels from wrds nd add nmbrs 2 lttrs to mk wrds lik M8 Quote
GIXXERUK Posted March 12, 2008 Posted March 12, 2008 What happened to Gixxer... he's gone like all intelligent and stuff ??? It wont last Quote
Sarnie Posted March 12, 2008 Posted March 12, 2008 What happened to Gixxer... he's gone like all intelligent and stuff ??? It wont last Only two weeks late Quote
chuds1 Posted November 7, 2008 Author Posted November 7, 2008 Problem solved. Sourced two new fuel dampers for Courtesy parts Nissan in Houston Texas(much cheapness). Fitted dampers, noise gone. Superb. Quote
Beavis Posted November 7, 2008 Posted November 7, 2008 Problem solved. Sourced two new fuel dampers for Courtesy parts Nissan in Houston Texas(much cheapness). Fitted dampers, noise gone. Superb. Nice result But just one thing did you walk to Texas and back only you posted this fault up months ago Quote
chuds1 Posted November 9, 2008 Author Posted November 9, 2008 They don't call me Forrest Gump for nothing. Quote
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