My diesel xc70 wont start when its been sitting overnight and its cold. Any other time the car starts fine.
This problem first started last december so I put it in a garage and they changed the glow plugs. All summer its been fine until now when its getting colder. I took the glowplugs out and checked them over by connecting them to their power supply lead and earthed the body against the engine block.
Then turned on the ignition and they all glowed. I am now lost for what to check now.