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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-20-2002, 01:47 PM
Registered User
 
Join Date: Mar 2002
Location: Great White North!!!!
Posts: 400
Prime Time

from time to time i read about oil changes and people priming their engines prior to starting the car.i have a '95 s500 and like to change my oil myself prior to storing.do these priming techniques apply to older cars or can i do it to my car?and .......how do i go about doing it?
__________________
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)
Reply With Quote
  #2  
Old 04-21-2002, 12:27 PM
Registered User
 
Join Date: Mar 2002
Location: Great White North!!!!
Posts: 400
HEY DOC!I HAVE THIS IS ONLY A QUESTION YOU CAN ANSWER>IT"S GETTING ALOT OF ATTENTION BUT NOBODY CAN COME FORTH WITH ANY INFO
__________________
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)
Reply With Quote
  #3  
Old 04-21-2002, 01:07 PM
Deltacom's Avatar
Benzholic
 
Join Date: Dec 2001
Location: Edge of the Abyss
Posts: 335
A word of caution about V8 oil changes

Is this info you are after?

A word of caution about V8 oil changes

On any Mercedes with the 116/117 engine (mainly of the 380, 450, 560 line), there is a procedure you must do after changing the oil. Draining the oil also drains the oil out of the timing chain tensioner. If the engine is started after an oil change, the tensioner takes a few seconds to build up oil pressure again. in these crucial few seconds, the timing chain is flopping around loosely. On a higher mileage, or even not so high mileage engine, this slapping of the chain has a tendency to break the timing chain guide rails, sending plastic shards into the oil pan, and possibly bending the valves by letting the piston hit the valves. I have seen so many inexperienced, or just uninformed, people make this mistake. When this happens, the heads and oil pan must be pulled off. The valves have to be inspected for damage, the timing chain has to be replaced, along with the guide rails obviously. And all the debris has to be cleaned out of the oil pan. The way to prevent this is simple. Once you change the filter and get the new oil into the car, unplug the ignition coil, which is on the wheel well just behind the left headlight. Then crank the engine until the oil pressure gauge on the dash starts to move, which usually takes a good 20 seconds. Plug the coil back in, and fire it right up! If you own one of these cars, I wouldn't recommend taking it to a Jiffy-Lube type place just for this reason.

With the coil unplugged, the only force on the chain is from the starter motor turning at a few hundred RPM's. This is opposed to the force of a 200-something horsepower V8 on a 1200 rpm fast idle. The difference is dramatic. You're right, the chain is still loose, but it doesn't do NEARLY as much harm as starting the motor would.
__________________
__________________
Deltacom ~ Absit Iniuria Verbis ~
Reply With Quote
  #4  
Old 04-21-2002, 01:22 PM
Registered User
 
Join Date: Mar 2002
Location: Great White North!!!!
Posts: 400
thanks deltacom!your info was welcome but now i'm more nervous than before!i plan on doing my '95 s500 oil change myself with the help of a topsider(the real steel one).i had read that for the amount of time that the engine was draining and out of oil and then refilled with new that there was nothing to be concerned with since a thin film was left behind on all parts.your priming instructions are invaluable and most appreciated-i wish i had some way of filing them from this site for future ref.
p.s. is that priming not hard on the starter???thanks again
__________________
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)
Reply With Quote
  #5  
Old 04-21-2002, 01:57 PM
Deltacom's Avatar
Benzholic
 
Join Date: Dec 2001
Location: Edge of the Abyss
Posts: 335
Filing the info

Just highlight the text (left buttom on the mouse, hold it down and drag to end of text) right click on the text and select copy, open a word document, right click again and select paste, and presto you have a copy for your records.

The oil film left on the engine is not relevant to the issue of the tensioner which needs to fill with fresh oil. Just cranck the engine for about 10-15 seconds, that's enough.
__________________
Deltacom ~ Absit Iniuria Verbis ~
Reply With Quote
  #6  
Old 04-22-2002, 10:38 AM
moedip
Guest
 
Posts: n/a
Deltacom - the response you give is straight off another mercedes board. I asked them the same question I will ask you - but no one there answered it except for saying that Porsche's oil system rules. Using common sense logic: The oil you change is in the sump of the oil pan - the tensioner is high up the front of the engine - on a 5.6 litre V8 - How is draining the oil from the sump going to drain the oil from the tensioner??? If the tensioner is going to drain while taking the oil from the sump - shouldn't it also drain every time you turn the engine off - seeing that oil if not constrained will always seek the lowest level?? If the tensioner does not drain when you turn the engine off and let it stand overnight - since once primed it holds the oil- why would it drain when you remove the oil from the sump way down below?? - Just curious.
Reply With Quote
  #7  
Old 04-22-2002, 04:06 PM
Deltacom's Avatar
Benzholic
 
Join Date: Dec 2001
Location: Edge of the Abyss
Posts: 335
Chain Tensioner Oil

Two principles applies: Arquimede's and vacuum forces. The chain tensioner is connected to the oil circuit via narrow channel in the cranckcase (California models have their own oil pipe externally) and bleeding occurs once the oil pressure have been established via a relief valve. (When installing a new tensioner it has to be filled with oil prior to instal). As long as there is oil in the sump not far below the lower mark on the dipstick the cranckcase channels is blocked by the weight of the oil in the sump and the tensioner oil is not emptied due to the two above principles.
(Not rocket sciencie!).
__________________
Deltacom ~ Absit Iniuria Verbis ~
Reply With Quote
  #8  
Old 04-22-2002, 07:17 PM
Registered User
 
Join Date: Dec 2001
Location: Rocklin CA
Posts: 65
119 engines?

I thought the S500(96's) had 119 engines.

Same issue?

KG
Reply With Quote
  #9  
Old 04-22-2002, 07:41 PM
Registered User
 
Join Date: Dec 2001
Location: Rocklin CA
Posts: 65
Thanks
Reply With Quote
  #10  
Old 04-22-2002, 08:43 PM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Ken, to my knowledge, your engine doesn't apply... nor does daddios.
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
Reply With Quote
  #11  
Old 04-23-2002, 11:43 PM
Registered User
 
Join Date: Mar 2002
Location: Great White North!!!!
Posts: 400
.....but......

thanks deltacom for all the info-i had no idea that's the way it worked.BUT if my engine doesn't work that way which way does it work?
p.s. i see you had a 140 also,doyou mind telling me what happened to it?
__________________
'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Does this time of the year have anyone else down? TTaM Off-Topic Discussion 32 12-25-2004 12:03 AM
Rolling Stone: Top Ten Songs of All Time GermanStar Off-Topic Discussion 44 11-22-2004 01:04 PM
'87 300 SDL, to buy a whole new time relay or not... peragro Diesel Discussion 13 08-14-2004 02:34 AM
SRS light on all the time akaras Tech Help 4 06-12-2004 02:07 PM
Next Bush Scandal: Ahmad Chalabi and the Rube VP KirkVining Off Topic Discussion - Politics and Religion 116 06-04-2004 03:18 PM



All times are GMT -4. The time now is 11:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, 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