Johnstone supply san diego

Heater cores get blocked by crud and corrosion. The passages in the core are just a millimeter wide so it does not take much crud to clog them up. All XJ Non-modified/stock questions go here - Clogged heater core. If you core is that clogged I would flush the **** out of the radiator and the block sooner . Lisle Corporation 609Heater Core Backflush Tool Automotive auto shop hand tools LIS609LI609LS609LIS-60900. If one hose is hot and the other cool or cold to the touch, then you might have a clogged heater core.

As the coolant circulates through the core, the blower motor. Cooling systems backflush tool fits 1/5/and 3/heater hoses and uses a standard garden hose for water. I plan to take it to a dealer in a couple weeks but we are about a hr drive . I have a clogged heater core , in the past i have used CLR let it sit over nite and flush it out with clean water and air, what other chems or tricks . The stop leak probably clogged your core. You can flush the system but the leak may/probably will come back. Or the flush may not unclog it at . Car Advice from Tommy… Hi everyone.

If not the problem might be a clogged heater. A major cause of heater core failure is electrolysis, a process of chemical changes in the cooling system, by the passage of an electrical current through the .