Blocked Heater Core
A blocked heater core is often responsible for poor coolant circulation. It is easy to flush the heater core without removing it from the car. This is most easily done in conjunction with an engine compartment wash or a cooling system overhaul, as everything gets pretty wet.
Disconnect the hoses to the heater and back flush the core with a garden hose. On cars that have the nipples in tight places, leave the hoses on the core and flush through the hoses. Flush in both directions until the water runs clean. Stand back - the water will really shoot out of the core, carrying with it an amazing amount of rust and scale.
Carefully inspect the hoses and clamps. Any questionable parts should be replaced at this time while it is easily done with parts at hand.
In the good old days, the dealer would supply you with a touring kit that included, among other spares, a set of hoses. This is still a good idea, especially if your trip will take you through areas of the country where the corner parts store is not likely to stock parts for your car
Working on automobiles is inherently dangerous. Moss Motors, Ltd. is not liable for injury or damage due to incorrect installation or use of their products. All products are sold with the understanding that the safe and proper installation and use of the products is the customer’s responsibility. Follow factory workshop manual procedures and instructions, but use current shop safety standards and common sense. Some tasks will require professional advice or services which Moss Motors cannot provide.Email (for Moss Tech help):
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