Does anybody know where i can find a diagram of the heating/cooling system for a h23a1

 

diagram of the water flow or diagram of the placement of parts?

any online parts catalog should get you the latter, any online Service Manual should get you the former.

 

placement of the parts..ie the hoses. got a back end leak and cant tell which hose it is

 

most heater hose is your standared hose that runs from the side of your block to you header core. They are the ones found in the rear of the block, the big bulky ones run from eneinge to rad and then there are some smaller ones that run from you Fast Idel valve in such... just some ideas tho