Which Benz's have D-Jet fuel injection? - Mercedes-Benz Forum
 
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#1 (permalink) Old 03-23-2010, 12:55 PM
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Which Benz's have D-Jet fuel injection?

My experience has been with Porsche 914s, and am familiar and comfortable with D-Jet fuel injection, now looking into the possibility of getting a 70's MB. I like the SLs but would consider the coupes/sedans. Want to stick with D-Jet or possibly L-Jet if that was avaialble.

Which models/years MB's have the D-Jet FI?

Thanks in advance.
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#2 (permalink) Old 03-23-2010, 02:42 PM
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r107 SL/C V8 3.5 AND 4.5
W108 and W109 V8 3.5 and 4.5
W111 Coupe V8 3.5
W114 280C L6 2.8
early W116 280, 350 and 450
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#3 (permalink) Old 03-30-2010, 09:00 AM
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Now just trying to correlate this topic with what I hear. People tell me (atleast in ks) that I should sell my Mercedes when I get it repaired and I'm thinking, why? "Oh b/c Mercedes have a lot of issues, and I'm thinking is it b/c of this D-Jet fuel injection system? OR? I just have been hearing that a lot, and I like to think of Mercedes-Benz as a good car lol any input?
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#4 (permalink) Old 03-30-2010, 09:27 AM
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The D-jet is an excellent EFI system, reliable, stable, adjustable, etc.
Keep your alt. voltage stable, elect. grounds clean.

Brian O
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#5 (permalink) Old 03-30-2010, 11:20 AM
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Sounds good. So... I have another question. I bought a "Delphi" fuel pump for my Mercedes 280SE 4.5, and I am about to get a relay that I should need for it to fire up. Does that particular model need a better fuel pump? it seems to pump fuel, but I didnt want to ruin anything either. .
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#6 (permalink) Old 03-30-2010, 11:23 AM
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Also Brian, and thank you for your replies (bet you know waay more than i do about this stuff) I noticed on my model that their is an adjustable knob on the ECU, and I hav no clue about how I should adjust that since I liv in Kansas...What's the adjusting do exactly?
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#7 (permalink) Old 03-30-2010, 12:28 PM
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I have been around D-Jet for many years, my daily driver for the last 12 years ghas been a D-Jet car (Porsche 914). They are easy to maintain and simple in design. The ECU knob adjusts cold idle mixture. Off idle, and after the head temp sensor heats up to operating temp, the ECU takes over and the knob does nothing.

Are all the D-Jet parts for MB's readily available? TPS, MPS, fuel pumps, etc? Any source for new D-Jet fuel injection harnesses?
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#8 (permalink) Old 04-05-2010, 12:23 PM
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So I guess these D-jet parts are hard to find? Anyone?

Thanks Jeff
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#9 (permalink) Old 04-05-2010, 12:32 PM
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The knob on the box is for fine adjustment of idle fuel.

The parts are not hard to find (in my garage) as I have been pulling them from the Pick-A-part yards for years now just to have spares, can't have too many.

Brian O
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