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 > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 09-08-2013, 08:03 AM
Registered User
Join Date: Sep 2013
Posts: 1
300td running rough when warm

hi there im new to this forum.
Ive got a 98 300td merc saloon!!!!!!
Its done 162,000 miles with full history. I!ve been driving it for 2 months and it started running rough once the engine got warm.When slowing down for traffic or stopping.While in traffic the car idles bad and the car shuttered all over the place.Once the car is moving it runs perfect.

So I took it to the mechanics and they said it was the injectors, so I changed all 6!!!!!!!. Picked the car up, it was driving perfect. 2/3 months later its started all over again!!!!!!

Also the car has a bad blow on the exhaust, I think from the down pipe. When still its a little fumey!!!!! So if any one has any ideas to what it could be I would be a very happy bunny many thanks chris!!!!

Reply With Quote
Old 09-08-2013, 11:21 AM
Diesel911's Avatar
Registered User
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 34,950
Air leaks can cause the rough running at idle. I think your year and model have the O-rings/Seals on the Fuel Supply Lines.

The Fuel Pressure Relief/Over Flow Valve can causer rough running at idle.

Check the top of the Fuel Injection Pump to see if it is wet. If so the Delivery Valve Oil Rings are shot; that can also cause rough idle.

84 300D, 82 Volvo 244Gl Diesel
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 04:34 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