Purgated Escort Escort Pump Endura 1.8

Good morning, I would like to know if someone can give me a hand, I have in Ford Escort with an endura motor 1. 8 diesel, I would like to know if they help me with the purging of the injection pump, I buy the car with the cylinder cover in poor condition, but the engine is disassemble It consumes the battery before I could purge all the air, maybe there is some way to do it without giving it so much start, I would appreciate advice, thank you