Ok I  have an 82 diesel westy. I have a problem with it getting hot.
Here is my list of things I have done.
Checked the two thermostats on the radiator
Made sure the fan worked and came on
Replaced the water pump thermostat
Flushed the system
Made sure that none of the hoses were blocked
Took out the water pump and it seems to turn freely.

It seems like the water pump is not pumping the water up to the
radiator, does the cap on the filler tank (where the antifreeze goes)
need to be a very tight fit to create a vacuum? Could my water pump be
bad even if it turns freely? What else can I do to troubleshoot this
problem?

Any help would be appreciated so my wife will stop bothering me.
Gary