Ok, Beginning of problem was,starting the car, delayed starter, not a unit problem, more like a immobiliser delay as the key turned to starter position, later a misfire at the MOT test, then driving back, lack of throttle response. Next day, engine turning not starting. So plugged in the kicker, sync the boxes and green light on kicker, turned over still no joy.
So nanocom plugged in, select EDC. faults read. Low fuel flow, immobiliser fault. faults cleared. Engine turned same faults appeared. So found tank pump gone, ordered a new one and went about trying to fit it. Pump fitted, using a bridge on the pump relay, bled to the F I pump and tried to start. after a lot of bleeding, including the BMW proper procedure and not a fart. Must be a ecu problem, so tested all the feeds and outputs from the ecu, CKP sensor was suggested by one specialist. I tried the sensor and read the specs all in line. So not the CKP sensor. Another search amongst the net and the RAVE disc. after reading a lot on Diesel systems , I found a paragraph in RAVE it confirmed my suspicion that the pump immobilisation is down to the "Control Collar" being moved to prevent the high pressure build up and therefore no fuel to the injectors. I arranged with Rick the Pick to test the BeCM and he did find problems with it. Also getting some settings restored. On the return of the unit. it was installed, key synced and on turning the key fuel from the injectors. Tightened up the injectors and it's alive. So despite reading on line, that the only control was the elab (cut off solenoid) these pumps and later ones use a device within the pump to stop engine starting. The system cuts out engine cranking as well, attempts to bypass these will lead to problems. Test drive of 50 miles and several starts since, all well. Thanks to all and Thanks to Rick in getting me back on the road in time for the funeral.
