![]() If the cap is damaged, coolant can leak out, leading to lower levels in the radiator. It also helps to regulate the pressure in the radiator. The radiator cap is needed to keep the coolant in the system where it belongs. The heat and constant pressure can increase the wear if left unchecked. As the motor runs, the pressure of the system can either increase the leak or decrease it, depending on where the hole is.Įither way, hoses can become brittle and worn over time, which is why they should be regularly inspected. Damaged HosesĪ broken hose can also cause a leak when the engine is running or not. You might also see leakage under the vehicle around the passenger or driver seat area. If the heater core is bad, you will notice trouble getting heat into the system. The heat that is generated from the system gets blown into the vehicle through the HVAC vents when you activate the heater. Hot coolant gets pumped into the engine through the system’s heater core. Here is some more detailed information on what could cause a coolant leak when the car is running. A bad intake manifold gasket could also be to blame. It’s also possible that there is a bad heater core or a blown head gasket. When you are satisfied that there isn't any more air, then you can put the cap back on the radiator make sure that the cap is tight.Can I Drive With a Coolant Leak? Causes of Coolant Leak While Car is RunningĬoolant leaks when the car is not running can be caused by damaged hoses, a bad radiator cap, a bad radiator, or a defective water pump. That way any air in the lines will escape out of the open radiator. Turn the car on, and let it run until it gets to running temperature. Reinstall the radiator shroud by turning the bolts clockwise. Turn the tensioner bolt clockwise while using a pry bar to pull the water pump toward you. ![]() Make sure that you check your diagram to see that you are putting the belt on correctly. Put the serpentine belt back onto the water pump. The radiator hose goes on the bottom and the heater hose gets attached to the top of the water pump. Reinstall the radiator and heater hoses on to the water pump. Use your torque wrench to make the bolts tight. Put the new water pump back into the engine, and finger tighten the bolts. Put some RTV sealant on the new gasket, and put the gasket on the new water pump. This will ensure a tight seal of the new gasket. Put paint thinner on a rag, and clean off any of the old gasket from the engine. If you can't remove the water pump after you have removed the bolts, then take a rubber hammer and tap on the pump until it becomes loose. Remove the bolts holding the water pump to the engine. The heater hose is located on top of the water pump, and the radiator hose is on the bottom of the water pump. Squeeze the clamp with a pair of needle-nose pliers so that it gets bigger, and move it down the hose. Take the radiator and heater hoses off of the water pump. ![]() ![]() ![]() If there is no diagram, grab a piece of scrap paper and pen and draw a diagram so that you will know how to put the serpentine belt back on when your putting the new water pump on.įind the right-sized socket that fits the pulley tensioner bolt, and loosen it just enough to remove the belt from the water pump pulley. When the bolts are off, the shroud will come off easily by hand.Ĭheck the fan shroud for a diagram of the routing of the serpentine belt. Do this by getting the right size socket and turning the bolts counterclockwise. Remove the bolts connecting the radiator shroud to the frame. ![]()
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