Notices
Diesel Forum Forum for Diesel engine vehicle related discussion
Sponsored by:
Sponsored by:

Odd Sound from E320 CDI

 
Old 04-07-2019, 08:27 PM
  #1  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
E320 CDI
Odd Sound from E320 CDI

Hi everyone, I have a 2005 E320 CDI. It runs great, no engine codes or anything, but I do have an odd sound coming from somewhere around the front of the motor. Take a listen and let me know what you think.
Attached Files
File Type: mov
IMG_1920audio.mov (400.6 KB, 59 views)
DBurbach is offline  
Old 04-09-2019, 12:36 PM
  #2  
Junior Member
 
Join Date: Feb 2019
Posts: 15
Received 0 Likes on 0 Posts
2005 E320 CDI
That is the CP3 HPP: a gear driven high pressure fuel pump. Thank you for this clip for I have been waiting for a response myself which nobody was able to provide. This is my HPP video:
. Still not sure if mine is on it's way out but hopefully someone else can chime in.
evan717 is offline  
Old 04-09-2019, 12:50 PM
  #3  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
E320 CDI
That's what I was afraid of, but I'm not surprised as that's exactly where the sound seems to be coming from. Those things are obscenely expensive though. Everything is running just fine though so I guess I'll just hope that it keeps running. I appreciate the reply, let me know if you find out anything on yours!
DBurbach is offline  
Old 04-09-2019, 01:04 PM
  #4  
Junior Member
 
Join Date: Feb 2019
Posts: 15
Received 0 Likes on 0 Posts
2005 E320 CDI
I have this posted on the other forum and no replies whatsoever. Check out fleabay for reconditioned ones from Germany. Under $400US but you have to ship your core. Do you have access to any tool to run active test on HPP? I use Foxwell NT520 to run the HPP active test and the car runs really rough and then dies at the end. Not sure at all what this means which is why I have been investigating a Xentry system.
evan717 is offline  
Old 04-09-2019, 01:37 PM
  #5  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
E320 CDI
No I don't have access to anything at the moment, though I'd like to. Like I said the car runs perfectly and I'm not getting any codes or anything. I would imagine that if the pump was failing I'd be getting low fuel pressure warning or something. I recently changed some fuel lines and I got a low rail pressure code for a little while afterward but I cleared it and it didn't come back (I'm sure it was an air bubble in the line). Anyway, I'm probably just going to let it ride until it starts running rough or throwing codes.
DBurbach is offline  
Old 04-09-2019, 01:51 PM
  #6  
MBWorld Fanatic!
 
Join Date: Jan 2009
Location: V E G A S
Posts: 5,407
Received 486 Likes on 456 Posts
E250 BTC
Those pumps outlast the engine for most of the owners, so you'd have to have really bad luck having 1 fail.
$7 Bluetooth adapter will read rail pressure on your android.
kajtek1 is offline  
Old 04-09-2019, 01:51 PM
  #7  
Junior Member
 
Join Date: Feb 2019
Posts: 15
Received 0 Likes on 0 Posts
2005 E320 CDI
That is my plan exactly. Let's wish us luck!
evan717 is offline  
Old 04-09-2019, 01:53 PM
  #8  
Junior Member
 
Join Date: Feb 2019
Posts: 15
Received 0 Likes on 0 Posts
2005 E320 CDI
Originally Posted by kajtek1 View Post
Those pumps outlast the engine for most of the owners, so you'd have to have really bad luck having 1 fail.
$7 Bluetooth adapter will read rail pressure on your android.
I do have Torque Pro and pressures are good. HIGHLY recommend.
evan717 is offline  
Old 04-09-2019, 02:01 PM
  #9  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
E320 CDI
Originally Posted by kajtek1 View Post
Those pumps outlast the engine for most of the owners, so you'd have to have really bad luck having 1 fail.
$7 Bluetooth adapter will read rail pressure on your android.
I'll give that a try, what SHOULD the rail pressure be?
DBurbach is offline  
Old 04-09-2019, 03:48 PM
  #10  
Junior Member
 
Join Date: Feb 2019
Posts: 15
Received 0 Likes on 0 Posts
2005 E320 CDI
I can send you a few logs in excel but stock max rail pressure is 1600 bar or ~23200 psi. The pressure increases (from 0.4 bar @ idle) with load/boost/rpm.
evan717 is offline  
Old 04-09-2019, 03:54 PM
  #11  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
E320 CDI
That would be great!
DBurbach is offline  
Old 04-09-2019, 11:28 PM
  #12  
MBWorld Fanatic!
 
Join Date: Jan 2009
Location: V E G A S
Posts: 5,407
Received 486 Likes on 456 Posts
E250 BTC
Idle is about 5000 psi and should build it in a second.
kajtek1 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: Odd Sound from E320 CDI


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: