Which is the inlet and outlet on the heater core?
Which is the inlet and outlet on the heater core? If I'm in front of the car facing the firewall which nipple on the heater core is the inlet and outlet, would like to flush out heater core , but before I hook up hoses I don't want to flush it on the inlet side , don't want to compact more stuff into core, want to back flush it first a few times right hose: inlet. left hose: outlet. Can a garden hose be used to flush a heater core? If not, you can use a garden hose for the...