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.

Hi Davy,

you should measure and adjust fuel pressure.

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

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!

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?

Hi William.

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