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 09-18-2002, 10:11 AM
Registered User
 
Join Date: Jul 2002
Location: Trenton, NJ
Posts: 248
Question Fuel Shutoff

Yesterday I replaced the fuel line that runs from the fuel distributor to the fuel cooler. It was a simple five minute repair but raised an interesting question. I expected there to still be some pressure in the line which would have to be bleed off. What I found was minimal pressure but constant flow during the whole time I was working. Fortunately with some creative hand work, I was able to hold my thumb over one connection while removing the old line and partially installing the new one.

My question is, shouldn't there be some type of fuel shut off that will prevent such a loss of fuel while working on the various parts of the system? For a simple job like this, it didn't really matter too much but what about for replaceing fuel injectors or the fuel distributor? I looked through the CD for some information and came up empty.

Thanks
jlc
__________________
Jeff

'87 560SEL 267K (177K on motor) Blue/Blue
'98 Buick LeSebre 60K (wife's car)
'56 Imperial Sedan 124K
Past Cars:
'67 Dodge Monaco 130K (Sold)
'87 Chrysler 5th Ave 245K and going strong (sold)
'73 Plymouth Satillite 175K (sold)
'96 Chrysler LHS 80K (totaled)
Reply With Quote
  #2  
Old 09-18-2002, 12:05 PM
Potomac German Auto
 
Join Date: Mar 2002
Location: Frederick, MD
Posts: 407
I can't imagine that you would get a continous flow. However, to resolve this, just take the gas cap off.
__________________
1994 E500 (MY SUNDAY DRIVER)
1993 190E SPORTLINE LE W/ M104 SWAP
1997 C230
2002 ML320
2000 BMW 528I (WIFEY'S CAR)

"Excuses are crutches for the unfounded."
Reply With Quote
  #3  
Old 09-18-2002, 12:19 PM
Registered User
 
Join Date: Aug 2001
Location: secret
Posts: 3,044
My understanding on this line and the fuel cooler function is that this is a return line for unused fuel and is not under pressure. However you have to have some pressure for it to flow. So, with that said, the only time you should have constant flow would be when the fuel system was under pressure, ie. engine running, residual pressue or as Pat said, fuel tank pressure.
Reply With Quote
  #4  
Old 09-18-2002, 01:06 PM
Moderator
 
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Yes, the cooler is in the return line and depending on the slight pressure or vacuum in the tank the fuel will flow either way (if one had a small vacuum the fuel wouldn't have leaked but would have gulped some air as the return column went to the tank).

As Pat said, open the gas cap.
__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote
  #5  
Old 09-18-2002, 01:09 PM
Registered User
 
Join Date: Jul 2002
Location: Trenton, NJ
Posts: 248
Smile Duhh!

Pat, Capt'n, Steve:

Thanks! Now that you say it, it seems, well very obvious.

jlc
__________________
Jeff

'87 560SEL 267K (177K on motor) Blue/Blue
'98 Buick LeSebre 60K (wife's car)
'56 Imperial Sedan 124K
Past Cars:
'67 Dodge Monaco 130K (Sold)
'87 Chrysler 5th Ave 245K and going strong (sold)
'73 Plymouth Satillite 175K (sold)
'96 Chrysler LHS 80K (totaled)
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 10:16 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