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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-13-2005, 09:33 PM
AMH AMH is offline
Virginia Gentleman
 
Join Date: Jun 2003
Posts: 219
'85 300D Turbo Whine

I have been reading the archives regarding turbo "whine" as my 1985 300D has similar problems.

The turbo was rebuilt by Majestic Turbo in Texas. Since re-installation, I have noticed a "whine" as the turbo spools up, then quiets down somewhat at highway speeds, although noticable.

It does not sound like a whistle or air leak. The sound is more like a turbine engine spooling up, almost like a siren. The archives suggest there is a possibility of the flex pipe behind the turbo being the problem.


I did not drop the exhaust assembly when I removed the turbo, rather I removed the three flange bolts, moved downpipe around enough to remove the flexpipe, then removed the turbo. Also, I did not remove the intake or exhaust manifold. When re-installing the flex pipe, I noticed it was just a little off angle between the turbo and downpipe. I would think if anything, there would be an loud exhaust leak, unless the sleeve inside the flex pipe is lined up properly and the turbo is "leaking air" around the flex pipe. Any thoughts? Alan
Reply With Quote
  #2  
Old 04-13-2005, 09:37 PM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
Check the air filter and turbo intake pipe. Turbine noise on a Benz is often a loose air intake pipe, they are normally very quiet. If the exhaust was leaking enough to give you a whine, it would also roar.

Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
Reply With Quote
  #3  
Old 04-13-2005, 10:04 PM
AMH AMH is offline
Virginia Gentleman
 
Join Date: Jun 2003
Posts: 219
Thanks for the tip, I assume you mean the "U" shaped plastic pipe that connects the air cleaner assembly to the turbo inlet. There is a rubber gasket at each end, can be very difficult to re-attach this pipe without pinching the gaskets. The air filter inlet fits tight. Alan
Reply With Quote
  #4  
Old 04-13-2005, 10:09 PM
lietuviai's Avatar
Registered User
 
Join Date: Mar 2003
Location: SW WA
Posts: 5,741
I love to hear the "whine" of my turbo as it spools.
__________________
DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
87 300D vs 300D 2.5 Turbo... speedy300Dturbo Diesel Discussion 31 02-09-2005 12:29 PM
1987 300D Turbo won't start Marcb Diesel Discussion 27 01-11-2003 12:16 PM
87 300d turbo cowboy Diesel Discussion 6 12-13-2002 04:07 PM
85 300D turbo shoe Diesel Discussion 4 11-14-2001 10:32 AM
intermitent lack of turbo on 85 300D bznupe30 Diesel Discussion 1 10-17-2001 12:55 PM



All times are GMT -4. The time now is 06:42 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page