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
  #1  
Old 10-09-2016, 10:48 AM
E_S E_S is offline
Registered User
 
Join Date: Jan 2008
Location: Norway, Europe
Posts: 80
M104 noise from front top of engine - timing chain/tensioner?

My M104 makes a noise at idle which seems to come from the front/top of the engine. All aux stuff like alternator, AC compressor, belt tensioner etc. is working and not making any noise. This engine does not have an air pump.

The engine seems to work like normal, milage is normal, performance as well etc. The noise has been there as long as I've had the car..

Mileage is over 300000 km, that'll be close to 200k miles.

Can anyone help me pinpoint this problem?

Check the link here for a short video of the noise: https://youtu.be/Ia_Nniw0ZL4

__________________
'96 E300TD (124.191)
'95 E36T AMG (124.092)
Reply With Quote
  #2  
Old 10-09-2016, 01:14 PM
Registered User
 
Join Date: Sep 2016
Posts: 9
When was the last time you had a valve job? I'm probably wrong(haha) but it sounds either like you need a valve adjustment or you're running low on oil. Then again you say it's only at idle so that might rule out valves.
Reply With Quote
  #3  
Old 10-09-2016, 01:58 PM
oldsinner111's Avatar
love all animals
 
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,715
change oil to see if metal flakes.Mine did that,i bought a newer engine.Never tore it down cause alumin all thru engine.Might be oil chain pump.
__________________
mankind,our demise's, will be the universe's blessing
Reply With Quote
  #4  
Old 10-09-2016, 02:19 PM
E_S E_S is offline
Registered User
 
Join Date: Jan 2008
Location: Norway, Europe
Posts: 80
This engine has got hydraulic valve lifters as far as I know. Oil is perfectly fine, level correct, pressure good and oil/filter changed 1500 km ago. I've heard the same noise from another M104 engine, but then again another without any noise. It doesn't seem to impact anything, but it doesn't sound very good at all. The noise seems to disappear at higher revs and it's not possible to hear it inside. The video makes it appear worse than it is.
__________________
'96 E300TD (124.191)
'95 E36T AMG (124.092)
Reply With Quote
  #5  
Old 10-09-2016, 02:37 PM
Registered User
 
Join Date: Oct 2004
Posts: 3,545
Many 104s have an audible piston slap at slower speeds and with the longer stroke of the 3.6 it can be exacerbated. Never seen a real problem come of it.
__________________

90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE
104.980
Milled & ported head, 10.3:1 compression
197 intake cam w/20 advancer
Tuned CIS ECU
4 ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff
Reply With Quote
  #6  
Old 10-09-2016, 04:28 PM
oldsinner111's Avatar
love all animals
 
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,715
My engine failed,flakes all over and in oil filter,and oil drain pan.I would not run engine anymore.Hopefully oil chain is the culprit,or timing chain.Wearing against timing cover.
__________________
mankind,our demise's, will be the universe's blessing
Reply With Quote
  #7  
Old 10-09-2016, 04:37 PM
oldsinner111's Avatar
love all animals
 
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,715
rebuilt m104 at ebay.de $3400 euros
__________________
mankind,our demise's, will be the universe's blessing
Reply With Quote
  #8  
Old 10-09-2016, 08:27 PM
oldsinner111's Avatar
love all animals
 
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,715
one more thing.I live in the country,so I can look and dump my oil without fear around my home where i don't want weeds,or grass.thats how I can look for metal flakes.

__________________
mankind,our demise's, will be the universe's blessing
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




All times are GMT -4. The time now is 07:27 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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