dont crack off the injectors and crank it, its pointless on a tdci all it will do is cause a fuel pressure drop and stop delivery of the fuel not to mention the pressure that can come out of those pipes can take your skin off easily. you need to get a diesel primer bulb and fit it onto the fuel return pipe either on the pump or at the filter and pump the air out until you get a good flow of diesel, then it will fire straight up takes minutes i do it everytime i service them and works everytime