![]() ![]() It is easier on some vehicles than others due to access to the core and the lines leading to and from it. Where you hook up a garden hose to the disconnected heater core and blow out all the crud in reverse. Nothing says "uh oh" like having a heater core go while traveling down the road and filling your cabin with extremely smelly steam. If the valve is not opening when it should, then you will not have any hot coolant flowing through the heater core.īe careful, lots of great ways to create a catastrophic heater core burst. If your vehicle has one of these valves you have to figure out if it is operating properly. ![]() ![]() Those valves are usually vacuum operated, and if so will have a vacuum line going to them. There is a good chance that if you found something strong enough it would also cause a leak somewhere.īTW, if the heater core is clogged, the radiator probably is also clogged and should also be replaced.ĪLSO, some vehicles have a valve on the coolant flow path of the heater core. If after a mild flush the heater core still is clogged you might be better off to replace it instead of trying to get something strong enough to desolve the crud that has been built up in the passages of the heater core. You can cause the radiator, heater core, and head gasket to leak if you use too strong of a flush. Don't get carried away or you will be buying a new radiator and new heater core.Īnd why throw the name Dexcool in there? No evidence posted to support name calling like that. ![]()
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