1972 280SE rough running - Page 2 - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #11 of 14 (permalink) Old 03-20-2016, 08:20 AM
BenzWorld Senior Member
wroding's Avatar
Date registered: Mar 2014
Vehicle: 1968 280se, 1972 280se 4.5, Land Rover disco II, Triumph Thruxton, Triumph Tiger. +boring Chevy Van
Location: Grass Valley california
Posts: 443
Mentioned: 0 Post(s)
Quoted: 58 Post(s)
The 6 cylinder 280se w108 is mechanical fuel injection. The w108 4.5 is D jet. When i first bought my 6 cylinder 280 the main fuel filter in the engine bay was absolutely filthy. It was caked with dirt in the bottom of the canister. As suggested the tank screen would be worth a look and change. I also fitted an inline clear filter between the tank and fuel pump so i could monitor cleanliness. also add some protection for the fuel pump.
Good luck
Cheers John.
wroding is offline  
Sponsored Links
post #12 of 14 (permalink) Old 03-20-2016, 05:53 PM
w108,107 Parts Hoarder
Fonzi's Avatar
Date registered: Jun 2010
Vehicle: 4Keep:450slc5.0cab 280sl5sp 280se4.5 500seAMG 2sell:500sl92 380se83 300se86 350sl4sp 75slc MorInSig
Location: Philadelphia Area
Posts: 19,709
Mentioned: 34 Post(s)
Quoted: 1835 Post(s)
Lifetime Premium Member
1972 280SE rough running

6 Cylinder Injection Styles:
I don't believe the SOHC m130 engines ever came in a d-jet variant. I believe the m130 was last in 1972 cars, while the m110 dohc seems to have replaced it, a direct replacement in such cars as the w114, where the 1973 year had the w114 had the diagonal firewall supports eliminated in order to fit the m110 dohc. I believe the m110 was available in D-jet right from the start. I know the m110 was used in w116 cars, and don't believe the m130 was used in w116 cars. I also don't believe that the m110 ever went into any w108 at the factory. I believe the m110 went to k-jet at the end of 1976.

V8 cars:
6.3 are not d-jet. I'm not sure what it is but assume it is the same mechanical Bosch injection.
M116 and m117 were never used i with the older mechanical injection. They got d-jet from the start and switch to k-jet around the beginning of 1976.

So... I don't think there were ever any d-jet 6-cyl w108, and doubt there were any mechanically injected early w116.

And my w108 is a 1973. I know the w108 and w116 had some overlap, but assume it was limited to the 1973 model year, which you often can't find for a w108 despite having seen many 1973 w108 cars.

So the important thing is that I'm pretty confident Kent's video applies.
wroding likes this.


My signature:
Click for list of my 34 MB since 2010. If, you want 70's-80's Mercedes tuner wheels, let me know.

Last edited by Fonzi; 03-20-2016 at 05:57 PM.
Fonzi is offline  
post #13 of 14 (permalink) Old 03-22-2016, 08:32 PM
BenzWorld Extremist
Date registered: Sep 2012
Vehicle: 300sel W109, 280S 70 , 220s 62. 230 66. Lancia Flavia 63.Pininfarina
Location: Totteridge London.
Posts: 811
Mentioned: 0 Post(s)
Quoted: 59 Post(s)
I always had the impression that 1972 was the very last year of production for108 and 109 models .
adler is offline  
post #14 of 14 (permalink) Old 03-23-2016, 11:48 AM
BenzWorld Elite
rumb's Avatar
Date registered: Oct 2012
Vehicle: 68 250S, 91 300se, 98 SL500, 450SEL 6.9, 14 CLS550 Past MB's; 300SD, 300E, 300TE, 190E, ML420
Location: Colorado
Posts: 2,803
Mentioned: 12 Post(s)
Quoted: 517 Post(s)
The Mercedes-Benz W108 and W109 are luxury cars produced by Mercedes-Benz from 1965 through to 1972 and 1973 in North America only.

rumb is online now  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > Vintage 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:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

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

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