How To Flush Coolant System In Car

Once all water is drained close the radiator plug and seal the t tube with the cap supplied in the backflush kit.

While it s a good idea to regularly perform a coolant flush there are some tell tale signs that your car runs the risk of damage to the radiator or cooling system. Disperse the water and coolant evenly throughout the system. Let the vehicle sit for at least two hours so it is cool enough to work on safely. If you took your car for a drive make sure to cool the engine first.

Flushing your radiator has to start by draining the engine coolant that is present in your vehicle s cooling system. Visible debris in coolant. Do not open the cooling system on a hot vehicle or serious injury can occur. You may also opt to flush the system with water if you want to ensure that none of the old coolant is still in your car.

This is where the waiting happens your car has to get up to temp so that the thermostat opens up to cool your engine one this happens you will see the coolant level drop in the funnel and a few to a large amount of air bubbles comming up from the coolant this is the trapped air escaping your cooling system. To do this you need to park your car in a shade and on flat and even ground. Replace the pressure cap and run the engine with the heater on high until the temperature gauge reads in the normal range. Signs your car needs a coolant flush.

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Access the drain spout. Shut off the engine and clean. After the first drain fill the system with water then warm up the engine. Steps vary according to flush product.

Prepare your vehicle for a radiator flush. In this case a coolant flush should be performed as soon as possible. Using a flush product is good to break up any sediment or corrosion and get it out of the system. Step 5 remove flushing system.

Thirty minutes should cool down your engine. Open the hood of the car and locate the radiator in the engine bay. Once the water runs clear flush the system one last time with distilled water. Flush the radiator with tap water until the drainage runs clear.

Repeat filling the radiator with 1 gallon 3 8 l of tap water running the car with the heat on and draining it once it s cooled.