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Die Bosch D-Jetronic war 1967 die erste Großserien elektronische Einspritzung der Welt. - Bosch's D-Jetronic was the first mass-production electronic fuel injection.

Over fuelling Issue, W116 350SE 1974

  • William@secureict.co.za
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  • Frischling
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4 Jahre 1 Monat her #13949 von William@secureict.co.za
William@secureict.co.za antwortete auf Over fuelling Issue, W116 350SE 1974
Good afternoon Volker
I have placed all the fuel pipes in their correct places secured them and tried to start. IT swung strongly but did not start except for a short stutter after I put some fuel into the big intake under the filter. I am not a mechanic so don't know all the terms. The previous mechanic who struggled with this eventually had to replace oil as the over fueling was getting into the oil. I have another pressure regulator that I can test, also there is very little fuel in the tank which I must fill.
what do you suggest and what can I do next? Its lock down here so I have the time hence I am trying to solve this problem which has persisted for months now.

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  • Dr-DJet
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4 Jahre 1 Monat her #13950 von Dr-DJet
Dr-DJet antwortete auf Over fuelling Issue, W116 350SE 1974
Hi Davy,

you should measure and adjust fuel pressure.

Viele Schraubergrüße - best regards, Dr-DJet Volker
Alles für den Mercedes-Benz R/C 107 und W116 in der SLpedia Sternzeit 107

Workshop D-Jetronic 20.7. (ER), K-Jetronic 31.8. (F)

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  • William@secureict.co.za
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4 Jahre 1 Monat her #13951 von William@secureict.co.za
William@secureict.co.za antwortete auf Over fuelling Issue, W116 350SE 1974
Volker
The last person did that and it came out correct 2 bars I think both sides. The person also tried an of the shelf "grey" fuel pressure regulator to see whether that would work, and it did not. But I will measure. How does one measure and how does one adjust the pressure?
I am sorry to ask all these questions but I am not a mechanic and really appreciate your help.
William

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4 Jahre 1 Monat her #13952 von Dr-DJet
Dr-DJet antwortete auf Over fuelling Issue, W116 350SE 1974
Hi William,

if you had it wrongly connected, you would see a high pressure as flow back to tank would be blocked. Remove fuel hose to cold start valve and insert a manometer there to measure. Adjustment is on running engine via screw on pressure regulator (secured by a nut). Do not touch screw on damper!

Viele Schraubergrüße - best regards, Dr-DJet Volker
Alles für den Mercedes-Benz R/C 107 und W116 in der SLpedia Sternzeit 107

Workshop D-Jetronic 20.7. (ER), K-Jetronic 31.8. (F)

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  • William@secureict.co.za
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4 Jahre 1 Monat her #13953 von William@secureict.co.za
William@secureict.co.za antwortete auf Over fuelling Issue, W116 350SE 1974
Hi Volker
You are correct when testing on Saturday the fuel did fly out when opening hoses as the pressure was great.
I will get a meter and test the pressure whilst swinging the engine I assume.
I will also adjust the regulator as you say.
Should I also not try the other regulator I have?
what must the pressure be and if its below what do I do?
This I will do tomorrow or as soon as I get that meter and then come back to you.

Thanks again
william
By the way, is all this for free? Should we not be paying you for all this?

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4 Jahre 1 Monat her #13954 von Dr-DJet
Dr-DJet antwortete auf Over fuelling Issue, W116 350SE 1974
Hi William.

please read oir 107 manual here: jetronic.org/de/107sl-wsm/107sl-wsm-cont...-107sl-ri-engc-m116D ?

Viele Schraubergrüße - best regards, Dr-DJet Volker
Alles für den Mercedes-Benz R/C 107 und W116 in der SLpedia Sternzeit 107

Workshop D-Jetronic 20.7. (ER), K-Jetronic 31.8. (F)

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