It is the 740 turbo model. It has had an intmt problem with no start (but cranks fine) for a long while, over a year. Come back to it an hour later, starts right up usually. THis time, whatever it is, I think has gone out again and is staying bad.....so now it can be troubleshot. I checked for spark with my inductive spark tester....there is spark votage still going to the plugs. I thought it might be the fuel pump relay. So I rigged up a bypass hotwire direct to the main fuel pump. With the ign on, I can plainly hear something from the rear of the car running...I guess there is a tank-mounted pump also? When you stop cranking the car, I can plainly hear the main pump, the one almost beneath the drivers' seat, running. Then it stops....until you crank again. I took the line loose off the fuel pressure regulator return and fuel came gushing out of it when the car was cranked. So I don't think there is a problem with fuel delivery. I had to check it there rather than at the fuel rail, as I can't get the inlet hose connection (to the fuel rail) apart. SO next I put my noid light (Bosch) tester on each injector. They all flash. But what is the voltage suppose to be? The bulb only glows orange, so there couldn't be more than 2 or 3 volts. Maybe the ECU is pulsing them, but there is a voltage drop, so they are really not opening. The wife said it just died when she was idling, it never overheated or made any strange noise. Also, the timeing hasn't really been checked, but I think when a cr jumps timeing it is when you are starting it up. The upper cover is off, so I can see that the pulleys/timing belt seem fine, normal belt tension.
Since it appears spark voltage is still OK, it has to be inadequate fuel pressure, or injectors not opening, or timing....right?