Vectra Diesel Non Starter

the glow plugs don't come on till 5 degrees below. Probable trouble is the fuel spill pipes, replace them all and try again.

mrcheerful

could be injector seals.

As others have said, try the fuel leak off pipes from the injectors (pull the end of where they join back into the main pipe near the injection, as that's the one that tends to perish first. Any sign of the pipe perishing there, renew the whole lot). Also the glow plugs don't work until it's pretty cold, but the glow plug light should still flash on and off when the ignition is first turned on.

Having just written that, I've had a thought. Is it one of the GM 2.0 or 2.2 diesels, or an isuzu 1.7? If it's the Isuzu, you can ignore the above.