Quote:
Originally Posted by wildfire8
Is there any specific marking that tells you if it is the inlet hot or the outlet cool hose? If not how would I figure this out?
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The outlet hose connects the radiator to the suction side of the water pump. These hoses are usually reinforced with an internal spring to prevent collapse from the pump's suction. You can typically squeeze the hose in a few places and feel this reinforcement. The other hose connected to the radiator will be the inlet where the heated coolant from the engine is first delivered to the radiator. You can typically squeeze this hose in the middle of a straight run and it will collapse rather easily. Don't try to figure this out with a hot or running engine though.