E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Thread Tools Search this Thread Rate Thread Display Modes
Old 11-11-2012, 07:38 AM   #1
Registered User
Join Date: Sep 2007
Location: uk
Posts: 143
My Ride: 325 sedan
exhaust fume resonating sound

What I originally thought was tappet noise, is actually exhaust fumes resonating in the exhaust manifold. This is accordaing to a BMW specialist. And I think I belive him because I came across a 330 and heard the same sound. However, is there anyway of damping or cancelling this horrible sound out?
jimmy325i is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 11-11-2012, 08:01 AM   #2
Registered User
dmax's Avatar
Join Date: Aug 2006
Location: NJ
Posts: 23,709
My Ride: '99 328i 300K miles
Sometimes the exhaust mani heatshield gets loose and rattles. This is the first I've heard of someone having an issue diagnosed as such.

A tape of sound would probably help...and so would you using a stethoscope or hose as stethoscope to isolate the sound.

Try techron to clean up the fuel system...make sure you're using a proper LL-01 oil. See if that gets you anywhere. Also, some just rip off the heat shield...but I'm not so sure about that myself.

See me in June!
Ha! Ridgehill, Yonkers, June 8, 8 p.m. & Broadway Comedy Club, Sat., June 10, 6 p.m., hosting at the Comedy Cove, Springfield, NJ, June 16 & 17 for Joe DeVito, 9 p.m.
See Facebook for other shows and PM me if you can make one.

Please view this vid so it looks like I'm popular. Please! https://youtu.be/995gLmVEVZk

dmax on Facebook

Mangofy your E46!
dmax is offline   Reply With Quote
Old 11-11-2012, 09:08 AM   #3
Registered User
Join Date: Jul 2011
Location: Connecticut
Posts: 1,112
My Ride: 05 M3
It may be the sound you hear is a leak AT the manifold,not IN the manifold. I know from installing headers on different cars and trucks when the gasket fails it sounds like a ticking valve or lifter. IMO your head to manifold gasket has failed. It's a pretty involved job. The only ways to correct it is to diy,or pay up for gasket replacement.
Edit: definatly confirm that it is a leak before pursuing a repair.

sent from my ATARI sc1224

Last edited by HiHoBrian; 11-11-2012 at 09:12 AM.
HiHoBrian is offline   Reply With Quote
Old 11-11-2012, 09:13 AM   #4
Zero. Leaks.
Solidjake's Avatar
Join Date: May 2008
Location: NYC
Posts: 31,058
My Ride: '02 330i 6MT
Also check your spark plugs for any looseness. That causes a ticking sound too.
Solidjake is offline   Reply With Quote
Old 11-11-2012, 10:13 AM   #5
Registered User
Join Date: Sep 2007
Location: uk
Posts: 143
My Ride: 325 sedan
not the spark plugs for definate. Gonna look in to the other possibilities. Thanks
jimmy325i is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON

All times are GMT -5. The time now is 11:47 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use