fuel pump regulator? - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 08-05-2008, 10:37 AM Thread Starter
BenzWorld Member
Rauchen's Avatar
Date registered: Jul 2008
Vehicle: 1971 Mercedes 280sel (w108)
Location: Nixa Missouri USA
Posts: 86
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
fuel pump regulator?

My 1971 280 sel seems to pump too much gas at times to my carb. After about a 10 mile run, especially pulling hills and so forth, if I turn the car off, it will then flood the carb. So then before I can restart the car, I have to air out the carb to get it started again. I was wondering if this could be helped by adjusting the flow from the fuel pump? It is, however, an after market AC spark fuel pump. But I don't know if these have an adjustment or if I could get some type of inline regulator or if I am just way off base with this.http://www.benzworld.org/forums/imag...s/confused.gif
Rauchen is offline  
Sponsored Links
post #2 of 3 (permalink) Old 08-05-2008, 10:43 AM
BenzWorld Elite
Diesel Benz's Avatar
Date registered: Dec 2005
Vehicle: 222.132 & 221.122 & 212.025 & 906.633
Location: Europe
Posts: 10,320
Mentioned: 3 Post(s)
Quoted: 32 Post(s)
Shouldn't the fuel pump just keep sufficient fuel pressure at the carburettor input and the carburettor itself should have a float controlling the fuel level. Perhaps the needle does not hold the pressure well enough?
Diesel Benz is offline  
post #3 of 3 (permalink) Old 08-05-2008, 12:25 PM
BenzWorld Member
Date registered: Jul 2008
Vehicle: 2005 C230 K
Location: Patterson, Ca.
Posts: 179
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
It's possible the float is getting stuck open. The fuel pump is there to keep a constant flow of fuel (pressure) going to the carb then the float controls the fuel. Maybe there is a adjustment screw (air/fuel mix) that will allow you to adjust the float controlling fuel flow into the carb. It is also possible the fuel pump is pushing to much pressure. It may be rated more then the stock unit.
MelloC230 is offline  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > General Mercedes-Benz

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode

    Similar Threads
    Topic Author Forum Replies Last Post
    Smelling Fuel - Change Gaskets at Fuel Regulator? davidby R129 SL-Class 0 04-03-2007 10:51 AM
    Fuel regulator ak380sec General Mercedes-Benz 0 02-22-2006 06:52 PM
    Fuel pump/regulator question euroamg W123 E,CE,D,CD,TD,TE Class 6 10-04-2005 06:04 PM
    380sel where is the fuel pump fuse? have no power to pump meggala W126 S,SE,SEC,SEL,SD,SDL Class 3 08-02-2005 03:44 AM
    280E: Fuel to Cold Start Injector, but not to main injectors - Fuel Press. Regulator? or other?? GermanCarNut W123 E,CE,D,CD,TD,TE Class 0 01-25-2004 03:12 PM

    Posting Rules  
    You may post new threads
    You may 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 Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On


    Title goes here

    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome