Hello! I'm looking for some help before I have another heart attack!! Car is a 2002 A4 2.5 V6 TDi AKE It's had a new fuel pump (diesel bob), a new needle lift sensor/no 3 injector (Bosch) and a coolant temp sensor. Timed up and was running ok but a little smokey (white), sat for an hour idling fine, came back in the morning and it wouldn't start. Advanced the timing and she started, reset the timing to just below the green line on the vagcom graph. Left to cool down overnight and now it won't start. Cranks, fires then runs for a few seconds and cuts out. It's done this a few times now. Rechecked the timing and advanced and retarded it, same thing. Keep getting a brake warning light on the dash which seems a little odd. Car has been stood for quite while. Added new fuel and a return valve on the filter as i broke the original one!! Bed the system and still no joy, no fault codes in vagcom. I'm really at my wits end now, its almost as if the ecu doesn't like a signal from something and its cutting the fuel off?? Please help!!