Help with lack of power in the Ford Transit 98

I have an Ford Transit Model 98 Recove Motor has a new and new set and has no power. The ijector pump was already proven by a firefighter and says Etabien. I do not know that the lack of power will be revealed if you want to smoke from any color. Thanks

the other question is whether it has to do with the motorcycle adjustment. Tighten the cylinder cover regulation of the valves or some other adjustment.

hello.
The meaning of power is to carry out mechanical work in a certain time. In a diesel engine to carry out this work there must be three fundamental conditions
1. Fuel
2 Oxygen
3. and a good compression to turn on the mixture

therefore verifies these three conditions, as you say that the pump is well verified the compression.

It may happen that after an engine adjustment, the engine is tight, and this is reflected in a lack of power, the engine is sucking and does not come out as it is already very tight and it takes a bit of wear, as they do not pass from 60 or 80 kilometers per hour, it does not happen and you just have to roll it, how many kilometers do you have from the adjustment? As minimal, about 1000 kilometers are given more or less. But as I tell you it can happen and it would be normal, I don't stop