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 ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-04-2013, 01:24 PM
Registered User
 
Join Date: Mar 2009
Location: San Diego
Posts: 2,805
Question Newbie on engine sound - Diesl engine nailing or knocking sound?

My OM603 engine sounds noisy. I am not sure it is nailing or knocking. What are the differences? Any link to an actual video on the web? How about a spun bearing, what does it sound like?

Thanks
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #2  
Old 02-04-2013, 01:31 PM
Registered User
 
Join Date: Apr 2011
Location: Toronto, Canada
Posts: 229
Try youtubing it, there are videos of 240D's with blown engines and normal engine sound. Change your oil/filter also.

At idle is your oil pressure capped? Take a video please, not enough information for anyone to reply.
Reply With Quote
  #3  
Old 02-04-2013, 04:56 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,129
really hard to tell the sounds from a video.
a knock sounds like someone is hitting the block down low with a hammer...
nailing sounds like someone is hitting the head with a hard wooden dowel...
it's not really how the sound sounds, but WHERE the sound is emanating from...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #4  
Old 02-04-2013, 05:09 PM
layback40's Avatar
Not Banned
 
Join Date: Nov 2009
Location: Victoria Australia - down under!!
Posts: 4,023
Quote:
Originally Posted by vstech View Post
really hard to tell the sounds from a video.
a knock sounds like someone is hitting the block down low with a hammer...
nailing sounds like someone is hitting the head with a hard wooden dowel...
it's not really how the sound sounds, but WHERE the sound is emanating from...
X2 Time to get your big screwdriver out & use it as a stethoscope.
__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
Reply With Quote
  #5  
Old 02-04-2013, 05:36 PM
Registered User
 
Join Date: Mar 2009
Location: San Diego
Posts: 2,805
Quote:
Originally Posted by vstech View Post
really hard to tell the sounds from a video.
a knock sounds like someone is hitting the block down low with a hammer...
nailing sounds like someone is hitting the head with a hard wooden dowel...
it's not really how the sound sounds, but WHERE the sound is emanating from...
The reasons I asked is that I kind of did a low budget 'ring' job. I removed the head and lower oil pan and pushed all the pistons out. Cleaned the piston groves, honed the cylinder with a HF cheapo honing tool, replaced rings and put it back all together. The car is now running good. I have done about 100 miles on it since I put it back in service. It idles smooth, no blow-by. The blow-by was so bad before that oil would squirt all over the engine bay if I removed the engine oil dip stick. Now it is OK with dip stick removed, oil cap kettle test passed. Very little or no smoke from tail pipe. So I believe all is well. I have yet to do a compression test.

However, the engine purrs then gives a 'tick' 'tick' sound on and off at idle. I think it is from the top, not down below. Revving the engine does not give any ticking sound. So I am not sure whether the engine is healthy or not. I think it is OK as it drives smooth and has more power than before.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #6  
Old 02-04-2013, 05:45 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,129
tick tick could be from the hydraulic lifters... what's your oil pressure at idle?
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #7  
Old 02-04-2013, 05:47 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by ah-kay View Post

However, the engine purrs then gives a 'tick' 'tick' sound on and off at idle. I think it is from the top, not down below. Revving the engine does not give any ticking sound. So I am not sure whether the engine is healthy or not. I think it is OK as it drives smooth and has more power than before.
That's the classic 603 lifter sound...........comes and goes..........cannot determine why.

Engine is fine.

Just ignore it or spend the time and money to remove the camshaft and pull all 12 and test them.
Reply With Quote
  #8  
Old 02-04-2013, 05:56 PM
Registered User
 
Join Date: Mar 2009
Location: San Diego
Posts: 2,805
Thank you guys. The oil pressure is at 3bar when first started then drop back to 1+ bar in normal idle. The oil pressure definitely is OK. I will change the oil after 500 miles and see how it goes.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #9  
Old 02-04-2013, 10:05 PM
Registered User
 
Join Date: Apr 2012
Location: San Luis Obispo, CA
Posts: 1,486
VSTECH-
Could you clarify why you were asking about oil pressure at idle? How does that relate to hydraulic lifter noise? I suspect I have a similar click as the OP, so I am trying to diagnose it (without going to the length proposed by Brian of removing them all).

Also, for the OP and myself, is it really true that running synthetic oil can quiet the lifters or is that MB folklore? Thanks.
__________________
1968 220D, W115, /8, OM615, Automatic transmission.
1987 300TD, W124, OM603, Automatic transmission.
Reply With Quote
  #10  
Old 02-04-2013, 10:09 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by Shortsguy1 View Post

Also, for the OP and myself, is it really true that running synthetic oil can quiet the lifters or is that MB folklore? Thanks.
It's true if it works for you.

It's folklore if it does not.
Reply With Quote
  #11  
Old 02-04-2013, 10:29 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,129
Quote:
Originally Posted by Shortsguy1 View Post
VSTECH-
Could you clarify why you were asking about oil pressure at idle? How does that relate to hydraulic lifter noise? I suspect I have a similar click as the OP, so I am trying to diagnose it (without going to the length proposed by Brian of removing them all).

Also, for the OP and myself, is it really true that running synthetic oil can quiet the lifters or is that MB folklore? Thanks.

just wondering if he had low oil pressure at idle, since he pulled the pistons, but did not mention replacing the bearings.

I can see if the lifters were sticking from varnish or thick oil, changing to synthetic could free them up.
I use nothing but synthetic on my 603 powered cars...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #12  
Old 02-04-2013, 11:08 PM
Registered User
 
Join Date: Mar 2009
Location: San Diego
Posts: 2,805
I did not replace the Rod bearings as they look OK.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #13  
Old 02-05-2013, 12:05 AM
Registered User
 
Join Date: Apr 2012
Location: San Luis Obispo, CA
Posts: 1,486
Quote:
Originally Posted by Brian Carlton View Post
It's true if it works for you.

It's folklore if it does not.
Haha. Truer words have rarely been spoken.
__________________
1968 220D, W115, /8, OM615, Automatic transmission.
1987 300TD, W124, OM603, Automatic transmission.
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 04:50 AM.


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