D-Jetronic Porsche 914 2.0L ECU, Bosch 0280000052

Hello Volker
here I finished my new injectors for D-Jetronic and tested my injectors again, the injectors are very well tested.
but when everything is mounted on the car, the injectors do not give gasoline.
the pressure of the pump is good (2 bars)
but nothing comes out of the injectors.
the engine runs very well when I put the start pilot.
Is it the ECU now?

I thank you.
Lux Pierre
Spa Belgium

Hi Lux Pierre,

if you do not see injectors spraying even while cranking the engine, yes then it must be cabling or ECU. Before you send it somewhere make sure that it is the right ECU for your car.

hello yes this is the calculator that I had with the engine that I buy in Bochum.
I just did a last test, I put the old distributor with the plug of the shield I put the contact the pump starts 2s! ok
and then I slowly turn the dispenser by hand and the injectors are well distributed. but there is only a small jet for me too little fuel for my engine to run normally.
so the ecu is good!
it's the 044 with wealth trimming

but
It seems that the electronic control unit controls the injectors well, but does not open them !

Hi Lux-Pierre,
I am sorry but I cannot follow this translation (by Google ?). Can you describe a bit more if I shall answer.

Good evening,
Sorry to bother you …

This is the story :
This morning, I reassembled the injectors and started the engine for a final test.
Immediately, the engine went very well but goes straight to 2,500 laps.

As a matter of fact, I noticed that I had forgotten to put up the air hose that goes from the cold injector to the butterfly box. (Yes, stupid me!)
So finally my electronic control unit goes perfectly well and the engine was suffocating for a lack of air.

Now I need to understand why, after all the setting back I made, the engine is doing some “bang” and why the cylinders 3 and 4 become very very hot.
Have you any idea of what I am doing wrong ?

I thank you for your patience and again my apologies.

Lux Pierre

Hi Lux-Pierre,

hot cylinders normally mean a lean mixture or wrrong ignition timing. I do not imagine what you mean by bang.