Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > E-Class (W211)
Timing Chain? Timing Chain Tensioner? Or What? >

Timing Chain? Timing Chain Tensioner? Or What?

Notices
E-Class (W211) 2003-2009

Timing Chain? Timing Chain Tensioner? Or What?

 
Old 05-15-2019, 01:45 AM
  #1  
Newbie
Thread Starter
 
Join Date: Dec 2018
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
E350
Timing Chain? Timing Chain Tensioner? Or What?

So I bought my 2003 E320 about 3 months ago with 119k miles. Ever since there has been a tapping/rattling sound which I have not been able to find/fix. The car has almost 123k miles now. I have cleaned the MAF sensor, replaced spark plugs, changed the oil and filter and the air filters, and have used fuel additives in some full tanks, 1 Chevron and and 2 Lucas. I like Lucas better, the engine seems to run smoother and quieter. I also replaced the crankshaft position sensor last week as it would not start sometimes and the scanner showed the code for it. I believe the motor mounts need to be replaced as they show some leakage, but there is no vibration at idle at all, just noise on acceleration.

Now the tapping noise does not happen at idle, even if I rev it. It only happens on acceleration and goes away as speed increases. But if I get my foot off the pedal for a second or two when accelerating, the tapping goes away, and comes back when I press the pedal again. So basically it makes the sound only when there is load on the engine.

After reading extensively on google, I am thinking it might be the timing chain or the tensioner. I have posted a couple of videos on youtube. One for cold start and one for warm start. Here are the links:

Cold Start:


Warm Start:


Any advice and comments are greatly appreciated.

Thanks, J

JesusL is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Timing Chain? Timing Chain Tensioner? Or What?


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: