Thanks for your reply dear customer.
Dear customer, this type of failures can happen with time and travel of the car, identify them accurately is a bit complicated from my point of view becasue i am not with the vehicle, but I will proceed to indicate the areas that you should check in your vehicle, so you will understand what is happening and we can get to the solution of your problem.
A diesel vehicle works with certain conditions that we must have in full operation to allow the vehicle works well
A diesel vehicle requires the following 4 factors:
1) good compression in the cylinders
2) a high pressure in the fuel injection system
3) a good air intake
4) and a high temperature in the cylinders
Firstly, the compression can be rule out in your case, because when there is a loss of compression in the cylinders the vehicle fails seriously and
because of the low travel of your transit I do not think you have major problems.
As a second, you may have problems in the fuel injection pressure, this pressure is given by the fuel pump, but there are certain factors that can affect this pressure, such as lack of maintenance, dirt in the tank, filters clogged or dirty or the injectors have some defects cause these problems as you describe me.
For example your vehicle is working in good condition until the pump becomes clogged with dirt causing it not to ingite, even if you notice diesel coming out of the injectors if it comes out with low pressure the vehicle will have difficultty turning on. In addition, the system must be purged, and the way in which it
cut off abruptly, gives us more clues here.
This is solvable by performing maintenance on the fuel rail and its components, in addition, replacing its filters, measuring the pressure of the pump and purging the system.
Then as I mentioned a good air intake is necessary for a good operation of the vehicle, when we present problems in the air supply overload or in some of the throttle body sensors or air flow meter, because these sensors are responsible for regulating the acceleration of the vehicle and the minimum opening of the air inlet to the vehicle to turn on, to know the good or malfunction of these is necessary to perform a computerized diagnosis of the vehicle to know the parameters.
Another a good temperature, if the faults occur in very cold climates, it is good to analyze the cooling system and thermostat of the vehicle, if the engine cools more than the neccesary and the glow plugs are not working, the vehicle will not turn on, this step can be rule out because you already replaced the glow plugs
Also doing a maintenance in the DPF is a good idea.
Finally I would like to recommend that you check the condition of the timing chain/belt.
As you see dear customer, there are several factors to analyze, I think it is prudent that the first thing you do is a good automotive diagnosis with a scanner with the Ford software according to the parameters you will get, the technician will proceed.
Have you understood dear customer?