The common signs of a faulty car radiator hose include leaks, cracks, swelling, and a collapsed hose. A damaged hose can cause the engine to overheat, which can lead to serious engine damage if not addressed promptly.

The car radiator hose works by transporting hot coolant from the engine to the radiator, where the coolant is cooled before being circulated back to the engine. The hose is made of flexible rubber to withstand the pressure and temperature of the coolant, and to allow for movement between the engine and radiator as the vehicle moves.

Replacing a car radiator hose is a relatively simple process. The old hose is removed by loosening the clamps and pulling it off the connections. The new hose is then slid onto the connections, and the clamps are tightened. It is important to only perfrom this repair on a cold engine, using the correct size and type of hose for your vehicle, and to ensure a tight fit to prevent leaks.