Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 09-01-2010, 11:44 AM
tbomachines's Avatar
ಠ_ಠ
 
Join Date: Mar 2009
Location: Philadelphia
Posts: 8,209
Quote:
Originally Posted by S-Class Guru View Post
Have you thought of an exhaust manifold leak; it has all the symptoms.
The vast majority of small manifold leaks pop when cold under acceleration, then seal up when hot.
Maybe leaking around the EGR system, if your car has one, or the manifold is cracked.
If the tick only occurs during acceleration, and not when just revving in neutral, it seems unlikely to be a valvetrain issue to me. The valvetrain and the oil supply don't know whether you are accelerating wide open or in neutral.

But..... covering all the bases; the hydraulic actuators (valve lifters) can be replaced relatively easily and inexpensively. They are in the ends of the rocker arms, so teardown is very minimal.

DG
For mine at least, it is more than a tick, it is just loud in general. Mine does not appear in neutral, ONLY when accelerating (i.e. putting a load on the engine). I checked the exhaust manifold after I bought the car thinking it was an exhaust leak but found nothing--and it passed emissions with flying colors. I need to generally just inspect the thing and another engine is in the works since I want a good solid base for a turbo project.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth
Reply With Quote
  #17  
Old 09-01-2010, 02:04 PM
mbzman's Avatar
Registered User
 
Join Date: Nov 2008
Location: Canada
Posts: 604
The thought of an exhaust manifold leak never crossed my mind. I will have to check that out and maybe post a video of the noise.

__________________
1989 300CE
Reply With Quote
Reply

Bookmarks


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
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 05:19 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page