Possible Radiator Problems…

The following 16 common radiator problems should help you understand the different types of radiator failures, and what caused them:

Click on Radiator Image to Enlarge Picture

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Tube-to-Header Leaks – Failure of the radiator solder joint on this radiator’s header and tubes, results in coolant loss.

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Steam Erosion – Steam can break down the plastic tank which will produce thinning and ultimately holes in the plastic tank. Frequently, white deposits

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Soldier Bloom – Solder corrosion caused by degradation of rust and leak inhibitors in antifreeze. Tube-to-header joints are weakened, and corrosion can restrict coolant flow.

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Over Pressurization – Excessive pressure in the radiator caused by defective pressure cap or engine-exhaust leak can destroy the radiator.

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Loose Side Piece – Can lead to flexing of the core and radiator-tube failure.

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Leaky Tank-to-Header Seam – Failure of the solder joint results in coolant loss.

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Leaky Oil Cooler – Coolant shows traces of oil. Transmission or engine damage can result from the mixing of coolant with transmission fluid or engine

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Internal Deposits – Rust and leak inhibitors can form solids that collect in the radiator cooling system and restrict flow.

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Fin Deterioration – A chemical deterioration of the radiator fins most often caused by road salt or sea water.

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Fin Bond Failure – A loss of solder bond between fins and tubes. Fins are loose in core causing loss of heat transfer and reducing radiator strength.

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Fan Damage – A minor collision or a failed water pump can result in radiator damage.

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Electrolysis – (External) Stray electrical current can cause an electrochemical reaction that will produce voids in radiator tubes.

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Electrolysis – (Internal) Stray electrical current can cause excessive corrosion of metal components.

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Cracked Plastic Tanks – High stress in the radiator can cause premature plastic-tank failure.

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Blown Tank-to-Header Seam – An indication that the radiator has been subjected to extreme pressures resulting from exhaust leaking into the cooling system.

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Leaky Inlet/Outlet Fitting – Leaks in the radiator inlet/outlet area can be caused by fatigue or solder-joint corrosion.