Notices
Maintenance & Repair 350Z up keep and diagnosing/fixing problems

Car idles with abnormal popping sound

Thread Tools
 
Search this Thread
 
Old 04-15-2009, 05:44 AM
  #41  
djamps
Registered User
iTrader: (1)
 
djamps's Avatar
 
Join Date: Dec 2008
Location: MD
Posts: 4,492
Likes: 0
Received 9 Likes on 9 Posts
Default

Let me guess, 6MT? Your engine has a slight misfire at idle (mine always has, since it was brand new) and it sends a slight vibration through the transmission and makes a clunking sound each time.

Simple test - does it go away or become less noticable if you hold the clutch in?
Old 04-16-2009, 12:26 PM
  #42  
XERMAN2001
Registered User
iTrader: (1)
 
XERMAN2001's Avatar
 
Join Date: Feb 2008
Location: Toronto, Canada
Posts: 966
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by djamps
Let me guess, 6MT? Your engine has a slight misfire at idle (mine always has, since it was brand new) and it sends a slight vibration through the transmission and makes a clunking sound each time.

Simple test - does it go away or become less noticable if you hold the clutch in?
i think mine does yes
Old 04-17-2009, 07:43 AM
  #43  
vinniePOOH
New Member
iTrader: (34)
 
vinniePOOH's Avatar
 
Join Date: Apr 2007
Location: Bonita, SD
Posts: 267
Received 0 Likes on 0 Posts
Default

does your idle flutter up and down?? and is your oil gauge below 1/4 line while engine is fluttering?? and does your shifter vibrate as well while everything is happening simultaneously??
Old 04-17-2009, 11:49 AM
  #44  
XERMAN2001
Registered User
iTrader: (1)
 
XERMAN2001's Avatar
 
Join Date: Feb 2008
Location: Toronto, Canada
Posts: 966
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by vinniePOOH
does your idle flutter up and down?? and is your oil gauge below 1/4 line while engine is fluttering?? and does your shifter vibrate as well while everything is happening simultaneously??
idle flutter up and down, yes after its warmed up, not when cold. no poping when cold either though.

oil gauge below 1/4 line, yes, told it was normal

shifter vibrate, yes, i was told this was normal in all Zeds though.

Last edited by XERMAN2001; 04-17-2009 at 02:14 PM.
Old 04-20-2009, 09:11 AM
  #45  
uglyduc
Registered User
iTrader: (6)
 
uglyduc's Avatar
 
Join Date: Feb 2009
Location: Morgan Hill
Posts: 409
Likes: 0
Received 1 Like on 1 Post
Default

I noticed the small pops after installing the ingen CAI. Pretty sure a tune would smooth this right out. AFR most likely is not quite right.
Old 04-26-2009, 03:04 PM
  #46  
XERMAN2001
Registered User
iTrader: (1)
 
XERMAN2001's Avatar
 
Join Date: Feb 2008
Location: Toronto, Canada
Posts: 966
Likes: 0
Received 1 Like on 1 Post
Default

so i took the car to the dealer, they said its a intake cam, or throttle body adjusting. They said it sounds louder because the sound is being amplified by the aftermarket intake. I was told they have heard it on other cars before and its nothing to worry about. its on record now so.............

anyone else gone to the dealer?
Old 07-28-2009, 09:05 AM
  #47  
St3v50z
Registered User
 
St3v50z's Avatar
 
Join Date: Jun 2009
Location: England
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine has these symptoms as described in this topic too. I was kind of worried, well, maybe not worried, but i am curious to know what it is. After a short run to work etc, if i let the engine idle in neutral for maybe 30secs, i can hear the exhaust note pop occaisionally, and also feel/hear a slight knock come from somewhere intermitently, my first thought was misfire, but the rpm's do not fluctuate at all....it is a strange one.

Last edited by St3v50z; 07-28-2009 at 10:21 AM.
Old 07-29-2009, 11:18 AM
  #48  
skarakis007
Registered User
 
skarakis007's Avatar
 
Join Date: Jul 2009
Location: SOMEWHERE
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default

Its ok. When u upgrade ur exhaust it flows more so there for ur valve are workin fast than normal. Its not really a pop its more like a lope. All cars with aftermarket exhaust do this. Ur str8
Old 07-29-2009, 12:59 PM
  #49  
MarvinMartian
Registered User
 
MarvinMartian's Avatar
 
Join Date: May 2008
Location: Here.
Posts: 4,141
Likes: 0
Received 0 Likes on 0 Posts
Default

Needs more plenum spacers.
Old 08-01-2009, 11:07 AM
  #50  
OrleanZ33
Registered User
 
OrleanZ33's Avatar
 
Join Date: Jan 2008
Location: Palmetto, Florida
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine does it as well when it was stock and now with the aftermarket exhaust on.Its even worse when the A/c is off. The car has a rougher than usual idle in the end I figured it was a normal condition with the engineering of the car so I didn't eve bother with diagnosing it. You've heard the saying "If it isn't broke, don't fix it"
Old 07-11-2011, 09:38 PM
  #51  
midnightz33
Registered User
 
midnightz33's Avatar
 
Join Date: Jul 2011
Location: Georgia
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

mine has the same problem and at one point it threw a code sayin random misfires but soon after it just went away..but it still pops..
Old 07-13-2011, 06:53 AM
  #52  
slmdchvy05
Registered User
iTrader: (3)
 
slmdchvy05's Avatar
 
Join Date: Oct 2010
Location: DFW Texas
Posts: 250
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine does it too, it did it when it was bone stock and still does it with CAI & Intake Manifold. The care idles normal and does the poping sound every 10-15 seconds, with the clutch in or out. It doesnt bother me I assumed it was normal considering all the other Z's have rode in do it to. LOL on another note my clutch chatters when it is not pushed in, but I was told that it was normal for the clutch chatter. I say it is what it is My car runs strong and hard so I am going to keep driving the Sh*t out of it, if it ever decides to Sh*t on me then it will gime all the more reason to go a head and do the LSX Swap in it.
Old 03-26-2012, 07:20 AM
  #53  
styy81
Registered User
 
styy81's Avatar
 
Join Date: Apr 2010
Location: singapore
Posts: 96
Likes: 0
Received 0 Likes on 0 Posts
Default

Hi guys any updates on this issue?

I have this problem after cleaning my throttle body. The idling went very high but was rectified using the relearn procedure but now it pops very often.

Seems like no one could have the answer for this issues.
Old 06-18-2023, 09:16 PM
  #54  
350ZKIDDO
Registered User
 
350ZKIDDO's Avatar
 
Join Date: Jun 2023
Location: Canada
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

05 350z 6MT. My VQ does the same. I'm a rev up.
700 rpm idle, k&n cold air. No other mods.
If I'm at idle and I give her a rev she pops and gurgles. If I'm in 1st or second and I'm slowing down she does the same.
Has always done it. I changed the spark plugs and did all the relearns. No change.
I used to idle high at about 1000rpm. Still did it the same then.
I'm under the impression it's normal.
Old 06-26-2023, 06:57 AM
  #55  
PsiKiK
New Member
 
PsiKiK's Avatar
 
Join Date: Apr 2017
Location: Dallas, TX
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default

Similar issue im starting to believe it's normal with age

Last edited by PsiKiK; 06-26-2023 at 07:19 PM. Reason: Posted in wrong thread
Old 07-03-2023, 01:35 PM
  #56  
bre240z
New Member
 
bre240z's Avatar
 
Join Date: Dec 2021
Location: La Puente CA
Posts: 254
Received 66 Likes on 53 Posts
Default

Ive had this since I bought my 04 6mt. Seems to be normal for these cars. Ive convinced myself to let it go since the car has no issues and runs great. Current mileage is 112,000
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Peak350
VQ35HR
34
03-01-2015 12:48 PM
OPTIMO
Intake Exhaust
3
02-08-2008 08:29 PM
frenzy757
Intake Exhaust
4
12-13-2005 02:39 PM
lastbutnotleast
Maintenance & Repair
4
09-17-2004 06:40 AM



Quick Reply: Car idles with abnormal popping sound



All times are GMT -8. The time now is 06:54 PM.