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 > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-04-2003, 08:05 AM
The Safety Geek
 
Join Date: Jun 2001
Location: Sudbury, Massachusetts
Posts: 254
Question Constant oil pressure

I was in the Tech section where this question was posted, and I have the same question. In my '72 the oil pressure gauge always reads 3 bar. Even when fully warmed up, at idle, in warm wheather (yes, I mean fully warmed-up).
I think the gauge functions correctly as there is a short delay before it climbs up when starting, and the delay is longer after an oil change.
The motor runs well, with no leaks, blow-by, or smoking, and the thermostat is working correctly. I just thought I'd throw this out there, TIA for your comments.

__________________
1992 500SEL 25K
1995 E320 40K
1995 SL600 120K
2002 JX8 Sport 43K
2005 Volvo S40 95K
2006 Isuzu NPR 304K (Frankencamper)
2007 Crown Victoria 150K
2014 Smart Electric 20K
Reply With Quote
  #2  
Old 06-04-2003, 01:23 PM
300SDog's Avatar
gimme a low-tech 240D
 
Join Date: Jan 2003
Location: central ky
Posts: 3,602
More important is how quickly it climbs when you tap the accelerator.

My 240D (117k miles) idles at/near 17lbs idling..... about 1/3 from bottom of guage.

It dips from full pressure, pegged at 45lbs, when shifting gears - otherwise always stays pegged while driving.

MB says the cars can idle at 7lbs. pressure without problem. My guage shakes like leaf at 15lbs after driving hard at high speeds.

Btw, this is on Mobile 1 synthetic oil..... if you are using dino oil, Harley Davidson shops carry straight 40 or 50 wt for Summer driving.

Cant think of anything that might screw up the guage, unless you've got slime deposits on the sending unit or the guage sticks behind the instrument cluster.
__________________
'80 300SD/ w116
'79 240D 4-spd
'71 750cc Guzzi

previously owned:

'83 240D 4-spd
'77 280SEL 4-spd
'74 280/8
'72 250/8
'65 220Sb 4-spd
'63 220Sb 4-spd
'63 190c 4-spd
'61 220Sb 4-spd
'60 190b 4-spd
Reply With Quote
  #3  
Old 06-04-2003, 02:34 PM
The Safety Geek
 
Join Date: Jun 2001
Location: Sudbury, Massachusetts
Posts: 254
Sorry DieselDog, my post was strangely worded. My gauge goes all the way to the top (3 bars, or 45psi) on start-up in about 2 seconds; then the needle stays at the top under any condition (even at idle, when hot). As soon as I shut down, the needle drops to zero without delay. After an oil change the needle takes about 4 seconds to climb to the top. I use a dino 15w-40, and change it every 2,000 miles. I'm hoping this post clarifies, not clouds the situation.
__________________
1992 500SEL 25K
1995 E320 40K
1995 SL600 120K
2002 JX8 Sport 43K
2005 Volvo S40 95K
2006 Isuzu NPR 304K (Frankencamper)
2007 Crown Victoria 150K
2014 Smart Electric 20K
Reply With Quote
  #4  
Old 06-04-2003, 02:45 PM
Motorhead's Avatar
Registered User
 
Join Date: Dec 2002
Location: Ca.
Posts: 976
I say you have nothing to worry about.... Looks like you have a healthy lower end. Every MBZ that I have ever been in woul;d peg the guage at start-up and quite a few stayed there.
__________________
My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.
Reply With Quote
  #5  
Old 06-04-2003, 07:40 PM
Manya
Guest
 
Posts: n/a
If it shoot to the top and stays there, then your car is running great!

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 04:37 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page