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 01-21-2006, 04:16 PM
Registered User
Join Date: Jan 2006
Posts: 3
Fuel pump or fuel injection unit?

I have an '89 300E which has starting problems. Sometimes OK, other times it cranks but won't fire up. Usually OK after sitting for a day. It shows symptoms of not getting fuel. Is there a simple way to check for defective fuel pump or bad fuel injectoion?

Reply With Quote
Old 01-21-2006, 05:57 PM
69 mercedes 220d
Join Date: Oct 2005
Location: Bozeman, Montana
Posts: 417
fuel issues

To check whether the fuel pump, per se, is defective, pull the line coming out of the fuel pump at a convenient place and have someone crank it over. Though, you should change the fuel filter(s) before doing anything. If the fuel pump is okay then crack an injector line to see if the injection pump is working.
Reply With Quote
Old 02-14-2006, 08:48 PM
Registered User
Join Date: Nov 2004
Posts: 121
Fuel pumps


Remember your fuel pumps are electric.

If you run the car and get under while its running you can put your hand on each one and feel them. They wine and vibrate slightly.

However the fuel pressure is another story that needs to be handled under the hood where the Fuel Diaphraphm Pressure Regulator is.


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 04:17 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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