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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-18-2001, 06:54 PM
Registered User
 
Join Date: Aug 2001
Location: Santa Maria, CA
Posts: 49
Fuel Accumulator Failure?

In doing some checking of my car's fuel system, I removed the VENT hose from the fuel accumulator on my '86 190E 2.3-16V. I had a suspicion that the accumulator might be bad.

The vent hose should have little else but fumes in it. When I pulled off the hose, fuel poured out (engine off).

Question: where does this vent hose go, and could something at the other end cause fuel to be in the vent line?

The fuel accumulator can't be completely shot, since the car does run. It is just slow to start when cold, and sometimes very hard to start when hot.

Any expert thoughts?? The manual shows no detail on where the vent line goes.

Tom Elerding

Reply With Quote
  #2  
Old 10-18-2001, 08:40 PM
Registered User
 
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
It is ok for fuel to be on the back side of it because the little hose goes directly into the main fuel line that is full of fuel. As the accumulator fills and displaces the air on the back of the diaphram, it will fill with fuel.

The only way to check is to pull it out and see if there is any restriction between the front and rear chambers. If not, it is faulty.
__________________
Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS
Reply With Quote
  #3  
Old 10-18-2001, 11:56 PM
Registered User
 
Join Date: Aug 2001
Location: Santa Maria, CA
Posts: 49
Fuel Accumulator Connection

Benzmatic:

Thanks for the reply. I just found not 10 minutes before this reply a diagram which shows that the vent line does connect back to the fuel supply line. It did not appear so under the car, but I'm sure that is the case.

A Bosch diognostic manual said to check the vent line. But Mercedes connected that vent line into the fuel supply, so the test is invalid.

Oh well, back to the drawing board. I'll probably pull it out to check it, since I don't yet have a Bosch-compatible fuel pressure gauge.

Regards,

Tom Elerding

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
Mechanical Fuel Injection Pump not working properly M_Anker Vintage Mercedes Forum 12 06-06-2004 12:40 PM
No fuel Doug Wilson Vintage Mercedes Forum 3 04-20-2004 11:24 AM
Fuel Problems Doug Wilson Tech Help 0 04-18-2004 09:58 PM
Need help with fuel pump relay wireing xp190 Tech Help 0 12-30-2002 04:27 PM
1982 380SL fuel problem Benzene Tech Help 5 06-12-2001 10:47 AM



All times are GMT -4. The time now is 02:21 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