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 11-26-2002, 04:21 PM
Registered User
 
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
fuel pressure question - KE-III

I did some work on our 1991 190E 2.3 that involved removing the electric variable pressure regulator on the side of the fuel distributor - easier access for removing the idle air rotary valve. The car had sat overnite before removing it, but I still expected some fuel to spurt out. No more than a drop came out. Is this normal? If there is pressure leakdown, would the injectors be the most likely culprit?

The car pretty much runs normally, but mileage is less than I think it should be, idle is sometimes a bit uneven or high, and the engine bangs around when started - but always catches quickly. Thanks for any input.

Steve
Reply With Quote
  #2  
Old 11-26-2002, 06:22 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
That should be SYSTEM pressure & not injection pressure. SO the fuel accumulator, fuel pump check valve, OR fuel pressure regulator would be likely causes of fuel pressure bleed-off.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #3  
Old 12-01-2002, 11:01 AM
Registered User
 
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
Thanks, I'll check those too, since I guess then that what I am noticing is abnormal. My concern about injectors is also from the following:

On startup (warm or cold) the engine responds quickly, but uneven firing for a couple of seconds. The condition is least violent if I wait until I hear the pump stop, then I start it immediately. Engaging the starter before or later than that I get the roughness. My guess is no gas or gas leaking thru the injectors is at fault?

Steve
Reply With Quote
  #4  
Old 12-01-2002, 04:33 PM
sunil190e-1.8's Avatar
Registered User
 
Join Date: Jun 2002
Location: uk
Posts: 236
i have the same problem on my car,the car fires up but idles unevenly for 2 seconds ,then stabilises.

i read somewhere that it could be the injector related
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 05:41 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