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 > Vintage Mercedes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-08-2003, 11:07 PM
Georgia Brown
Guest
 
Posts: n/a
What is ticking from front oil pan?

I have a 71 250 W114/M130 with 170K miles. Oil pressure 45 off idle, 25 at idle. No smoke. No vibration, really sweet and quiet.

There is a ticking/clacking sound (sorta like a bad tappet) coming from the front of the oil pan.

I pulled each plug wire to see if a rod knock would quiet down, no luck.

Question; Does the oil pump make noise? Does it make noise when it gets old?
Is the oil pump loose?

Would a loose chain or tensioner/slide make this regular ticking noise?
Reply With Quote
  #2  
Old 01-09-2003, 09:50 AM
Super Moderator
 
Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
The oil pump is shaft-driven and I don't think there is anything to make a ticking sound.

My initial thought is that you have a loose chain either because of stretch or the hydraulic chain tensioner may not be keeping it tight. It is not going to get better with age, so you might wanna get it checked sooner rather than later.
__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
Reply With Quote
  #3  
Old 01-09-2003, 11:00 PM
gmask's Avatar
Man of many masks
 
Join Date: Nov 2001
Location: Los Angeles
Posts: 777
Re: What is ticking from front oil pan?

Quote:
Originally posted by Georgia Brown

There is a ticking/clacking sound (sorta like a bad tappet) coming from the front of the oil pan.
OIl pan? Do you mean from the front of the valve cover?

I'm guessing that it is improper valve clearance or a worn camshaft lobe. Take the valve cover off and see if any of the lobes are worn or have large grooves in them. Are any of the rockers really loose or really tight?
__________________
MB 72 250 M130.923 114.011 170k The Beauty
Reply With Quote
  #4  
Old 01-12-2003, 10:25 AM
Registered User
 
Join Date: Dec 2001
Location: San Jose, CA
Posts: 854
gmask,

I am helping Bob (Georgia Brown) with this noise.

It is definetely coming from the lower pan area in the front. I was wondering what else was down there...
I guess just the oil pump, front sprocket, and big ends.

The engine is as sweet as can be, no vibration, etc.

What is a "pressure relief valve" and where is it?
__________________
Ed
1981 300CD (Benzina)
1968 250 S (Gina) 266,000 miles!
1983 Alfa Romeo GTV6 (Guido)
1976 Jaguar XJS-saved a V-12 from the chevy curse, what a great engine!
1988 Cadillac Eldorado (better car than you might think!)
1988 Yamaha Venture (better than a Wing!)
1977 Suzuki GS750B
1976 Yamaha XS 650 (sold)
1991 Suzuki GSX1100G (Shafty Gixser)
1981 Yamaha VX920RH (Euro "Virago")
Solex Moped
1975 Dodge P/U camper


"Time spent in the company of a cat, a beer, and this forum, is not time wasted!"
Reply With Quote
  #5  
Old 01-12-2003, 01:26 PM
Super Moderator
 
Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
To my knowledge, the pressure relief valve on a M130 is in the oil filter housing. Since the pressure output from the pump increases with engine speed, the relief valve caps the pressure at (I think) 3.5 bar by diverting some oil back to the pan.
__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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 05:52 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page