Hello everyone land rover freelander problem

hello everyone, please from the bottom of my heart, I'm desperate, I have a problem with a land rover 2.0 diesel, old model, 1999, the car came to me, I changed the injection pump + injectors because the car didn't start.. I put another injection pump + car injectors it started with a quarter of the key.. I gave the car to the customer.. he went to the technical inspection of the car to check it after he left the check he got home in the morning it didn't start again and now I don't know what to do I checked the car, distribution, everything, please, I will pay you from the bottom of my heart, whatever I do, 

thank you in advance 

+40771236911 whatsapp 

Petru Tuty skype