I need help, please.

Hello, I have a montero 2.8 TD with 4m40 engine and it does not start, it started to fail only hot and now it does not start in cold to see if someone helps me with this, when I give the key the engine turns very well and state checking some empty valves that are located behind the intercooler that are to break down the engine so that they turn quick And now I am not sure if I placed the hoses in the correct position

Hello good night I have that same bus and gave me a similar problem changed the heater and problem solved