I have recently bought a 1987 Jaguar XJS V12 HE Convertible.
It has been left in a barn for the last 8 years and I am trying to get it started.
Starter, ignition and fuel seems ok, but the injectors does not open. Not on ignition either. It’s a Lucas system.
I have checked the main relay and it gives 12V to the ECU (16).
I have cleaned the resistor and its connector and I can measure 12V from all pins and to ground. (See picture 1 below)
I have pulled one of the injectors from the motor and if I supply 12V directly to it, it opens and fuel comes out. If I measure on the two pins in the connector to the injector, there is 0 V. If I measure from either pin to ground, there is 12V. See picture 2
From the resistor to the injector there is this connector I have cleaned it and measured 12V on it as well.
See picture 3
For me it seems I’m missing ground somewhere or have a short circuit, but I’m a bit stuck now and hope somebody can help me with what I should check next.