Hi i'm after some advice!I have a vectra that is running lean!it's a real head scratcher weve changed throttle body,ecu,and air flow meter,oh and plugs. It's undrivable from cold(popin in the inlet manifold and high idle and missing once every 10 secs)once it's warm it runs better but really poor performance and erratic idle, the monitor lists on tech 2 shows wen warm the injectors time is about 3 secs or more but both lambda sensors are reading lean It could be fuel pump but iv'e never changed one before.I also have a zafira with the same prob but not in as much of a hurry.anyone else have similer probs