Why wont your astra diesel start after running out of fuel?

When your Astra diesel runs out of fuel, air can enter the fuel system, leading to a loss of fuel pressure and making it difficult for the engine to start. Additionally, diesel engines rely on a specific fuel injection process, and without fuel, the injectors can become clogged or air-bound. To resolve this, you'll need to prime the fuel system by refilling the tank and possibly bleeding the fuel lines to remove any trapped air.