- 1). Find the upper and lower radiator hoses, which go from the radiator to the engine and from the radiator to your exhaust manifold. The coolant hose runs from your radiator to your intake manifold. The heater hoses run from the radiator to the back of the engine block, as do the hoses attached to the intake manifold.
- 2). Inspect each hose for cracks, frisions or tiny tears. If you find any, replace that hose immediately. You may need to use a cloth to wipe the hoses and clamps free of grease so you can see them better.
- 3). Pinch the end of each hose in your Toyota Tundra and try to feel ridges or gaps inside. If you feel pits or ridges, the hose is failing from the inside and needs to be replaced.
- 4). Run your hands down the hoses to make sure they feel firm, not soft or pliable. If the hoses are soft to the touch, replace them to prevent failure. The hoses of a Toyota Tundra should always feel firm.
- 5). Look at the ends of the hoses to ensure they're properly seated. Check the clamps at the same time to make sure they hold the hose in place without pinching it, which can cause tearing and leaks. Adjust the clamps using a screwdriver.
- 6). Move the Toyota Tundra to a clean, dry location and allow it to run for several minutes. Check beneath the truck for signs of leaking. Make any adjustments you need to stop the leaks.
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