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Hi, I have recently rebuilt my 1.9 gti engine in my rally car, i have had it running since and it ran fine (sat for 50 minutes at the MOT station), but now after it failing to start on and off it wont start at all. When i could get it running, when it warmed up it wouldn't start. Here is what i have done found out upto now: AFM was know to be faulty so replaced with a working one. Jetronic injection system, so NO crank sensor etc, its an XU9JA as far as i can tell. Tested the throttle position sensor and replaced as was faulty. Replaced the wrong (had a 1.6 one in) ECU with a good one for a 1.9. Have checked for spark and there is definitely one. Have also got new plugs and coil. Have tested the ecu temperature sensor which reads correctly for it been cold (was 14c). Fuel pump works, its on a separate switch, plenty of fuel coming through. So i took the injectors out and turned it over, no fuel coming from the injectors (it even started briefly with the excess fuel that came out of one of the injectors that popped off). Tested the voltage coming from the injector plugs while turning over the engine and it registers 0.02v, which i believe it should have 12v. So, as far as i can see i have no voltage to the injectors so they wont work. Suspect problems: tachymetric relay: Does this supply voltage to the injectors as well as control the fuel pump (if not on a switch), when i press the ignition (has a push start) i can feel the relay activate and when i stop cranking it resets itself - seems ok but unsure. Injection Supply Relay - Do they have one of these, haynes manual has it in the wiring diagram but i cant find it on the car, would be a logical culprit though. Bad wiring - could be this as it has a cut down loom on it, problem im having is working out what to test from the injectors to where ever to find out if it is a faulty wire. Wire from dizzy to ecu - Not sure how to trace if this works but it would also make sense if the ecu wasnt getting this signal. Have had it suggested it could be the injector plugs shorting but can find any bad wires etc. I think i have covered everything there, any help would be much appreciated as im running out of options, its probably something simple. Cheers Kev