hi there had problems with my vectra b 2.2 dti so far i have changed spill off pipes , crank shaft sensor and injector seals still no good can any one help please
They do need a good powerful battery, so might be worth getting the cranking amps tested. It could also be a lazy starter motor or a failing glow plug system.
Have you tried push starting it?
Does it run ok once it starts?
Have you checked the fuel pressure (with a gauge, not just loosening a joint to see if fuel comes out)?