vectra diesels have a design fault - they connected the fuel leak off pipes to the inlet side of the fuel pump these go faulty and allow air into the system. new leak off pipe from non dealer should only cost £10 just pull them off one by one cut to length hope this is what u want
andy mech
April 2006
dose it smoke could be glow plugs?
dose the engine spin over fast enough?
when was it last serviced?
also are any engine managment light on?