starting from the water pump, and returning to the water pump
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Most cooling systems pump the coolant out of the engine through the top radiator hose. In the radiator. Out the radiator through the bottom hose. A by-pass system can be found on most cars and it includes the water pump and smaller diameter hose.l these smaller hoses rout the collant to certain components such as the heater core (which provides passenger compartment comfort). There many other variables depending of the car. Engine oil coolers. Intake manifold warm-up passages, I may be leaving some info out here but that is pretty much your basic cooling system routing. Best wishes.
