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

LinkBack Thread Tools Display Modes
Old 09-26-2008, 09:47 AM
Registered User
Join Date: Oct 2002
Posts: 45
W126 560SEL pumps run but no fuel?

Hi all. My wife's '89 cut off, won't start. Both pumps run but there is no fuel to the engine. Removed the fitting at the fuel cooler, not a drop (plenty in the tank). The car has been stumbling on hard acceleration for a bit. Will these cars run on one pump? Will the pumps run but not pump? Could the car run on just one working pump until the other failed?

Reply With Quote
Old 09-26-2008, 03:25 PM
Hit Man X's Avatar
Join Date: Sep 2004
Posts: 9,087
Thumbs up

Do you have volume from the pump? Because it runs doesn't mean it pushes fuel...
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
Reply With Quote
Old 09-26-2008, 07:38 PM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
The fuel cooler is on the return side of the system. There won't be fuel there unless the pumps make it to system pressure. Take the line off at the inlet side of the fuel dist. There is a screen in the inlet fitting and I have seen them plug up but it is rare. It is more likely that if the pumps can't get fuel through the pressure regulator then the pumps are bad. If so replace both.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote
Old 09-26-2008, 07:48 PM
Registered User
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Don't over-look the tank screen...specially on an 19 year old chassis...

A Dalton
Reply With Quote


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 10:50 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page