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 07-04-2001, 01:04 PM
pmizell's Avatar
Benz Zealot
 
Join Date: Jun 2001
Location: Houston, Texas
Posts: 838


Its a small plastic hose that had become very brittle and broke off while I was cleaning engine.

This is an M103 engine in a '90 300 E.

Thanks for any input!

~Paul
Reply With Quote
  #2  
Old 07-04-2001, 05:30 PM
Registered User
 
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
This is a hose that goes from the diaphragm of the fuel pressure regulator to the crankcase. The reason for it is IF the diaphragm fails, the fuel will be pushed into the crankcase instead of spilling inside the engine compartment and causing a fire.

PS...when you order parts from us, be sure to get a new oil cap. That one is ugly! The OE one is black.
__________________
Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS
Reply With Quote
  #3  
Old 07-04-2001, 05:36 PM
dlswnfrd
Guest
 
Posts: n/a
Clean fresh air

Brother of The Benz, pmizell
That is the air line to your electronic ignition's atmospheric pressure reference.
If you remove the airfilter and trace it under the fuel distributor, you will see it plugs into a rubber 90 degree fitting at the ignition system.
You can purchase this line in bulk lengths from your local M/B dealer's parts department.
Don't be too concerned if it is broken, everything will perform anyway until you replace it.
There are many lines of this material, but this seems to be the one that is short lived.
I couldn't keep from noticing you still have the hex nuts holding your airfilter top in place.
To make it easier to service the filter, I replaced mine with wingnuts. I bought them at Sears Hardware, maybe $0.15 each. I also replaced the two that hold the housing in place as well.
The small moulded hose to the rear of the large one is your possitive crankcase calibrated port. It too becomes hard and brittle, but you very rarily remove it.
You definately should replace the oil filler cap with the proper M/B cap and not that gascap. Not only does it seal properly, but it looks Super.
Happy Trails Beep Beep from The Spiderman in Houston!!!
Reply With Quote
  #4  
Old 07-04-2001, 11:02 PM
Registered User
 
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Sir, you are wrong. The hose that plugs into the EZL goes to the intake manifold and carries the vacuum signal so the ignition knows when to advance and retard timing.

You should check yours. IF it is in the wrong place, it will greatly affect performance.
__________________
Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS
Reply With Quote
  #5  
Old 07-05-2001, 09:50 PM
dlswnfrd
Guest
 
Posts: n/a
Haven't check lately

Brother of The Benz, Benzmac
Thanks for the reply.
Yes I know of the vacuum to the EZL, for some reason I thought it had a clean air reference source.
Wouldn't this be a kick in the gazoo?
After 14 years the line plugged into the wrong port?
I haven't looked for quite some time, just trying my memory.
I definitely will look see, who knows?
I see we both didn't like the ugly gas cap.
Happy Trails Beep Beep from The Spiderman in Houston!!!

[Edited by dlswnfrd on 07-05-2001 at 08:53 PM]
Reply With Quote
  #6  
Old 07-05-2001, 11:06 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 19,738
Spiderman in Houston,

You said you replaced two air cleaner hold down nuts with wingnuts. Do you have a wingnut on the third air cleaner attachment near the brake master cylinder or do you leave it loose so you don't have to mess with it?

Thanks,
Sixto
91 300SE
Reply With Quote
  #7  
Old 07-06-2001, 12:36 AM
pmizell's Avatar
Benz Zealot
 
Join Date: Jun 2001
Location: Houston, Texas
Posts: 838
Ugly gascap is gone (hey mr technician, how'd that gascap get on my engine oil filler?!)

Ordered a new one from FastLane, should be here tommorrow

~Paul
Reply With Quote
  #8  
Old 07-06-2001, 01:06 AM
dlswnfrd
Guest
 
Posts: n/a
All Wing-nuts

Brother of the Benz, sixto
I use wing-nuts, seven in all, for all the holding points of the air-cleaner housing.
The two toward the cam cover, the one on the oppositr side screwed on horizontally, and it is worth messing with to have the housing tight, I do tighten it, and the four attop the housing.
The one at the crankcase venilator hose may be difficult to tighten, depending upon it's stop position.
A flat washer or two adjusts it's position.
You must install the hose after the wing-nut is tightened.
I purchased mine from Sears Hardware and they are cad plated.
Happy Trails Beep Beep from The Spiderman in Houston!!!
Reply With Quote
  #9  
Old 07-06-2001, 02:00 AM
Senior Member
 
Join Date: Apr 2001
Location: Beech Island, S.C.
Posts: 468
From what I can tell by the grafics you described it's the vacuum line from the fuel pressure regulator.
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
part # help mattdave Tech Help 15 11-17-2004 08:40 PM
1998 C230 part upgrade Ethan Tech Help 2 04-20-2004 11:34 PM
Group Purchase 86 - 93 W124 Avantguard Grille placo1 Mercedes Used Parts For Sale & Wanted 78 08-26-2003 08:36 PM
1995 E-300 Diesel Leaking Part Byte007 Tech Help 2 01-30-2003 12:29 PM
What is the part number... hippie_elmo Vintage Mercedes 2 12-06-2001 05:13 PM



All times are GMT -4. The time now is 08:59 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