If you open the coolant reservoir cap, you’ll see that the coolant is therein. As the radiator is draining out, one thing that is not going to drain is the coolant reservoir tank. Drain out the coolant: Slide your catch pan under the vehicle and drain out the coolant. Drive your car for about 15 minutes, so the chemical flush will dissolve the clogged contaminants in the system. Make sure you don’t damage it because a bad radiator cap will also cause an engine to overheat. Refill your radiator with distilled water: you want to refill the radiator with a distilled water and get the best radiator flush chemical and in the radiator. Lock the radiator drain petcock once the coolant has completely drained out. If the coolant is not running fast via the petcock, one trick I learned years ago, lose your radiator cap and watch the coolant flow more quickly. If your radiator doesn’t have a petcock, you can grab your pliers and unclamp the down radiator hose, so the coolant will easily flush through. The petcock is usually at one end of your radiator, usually the lower right or left side of the radiator. Lose the petcock to enable the old coolant to flush through it. You want to make sure it stays directly under the radiator petcock. Grab your catch pan and slide it under your car. Empty your coolant: You want to empty your coolant. A couple of days before flushing your clogged radiator, you might want to pour a liter of chemical flush in your radiator and run it some days before flushing your radiator. So, whatever I explain using the radiator cap, you can always do it through the reservoir tank. Some cars might not have a radiator cap or a coolant reservoir tank. Always make sure that the system is cool because you don’t want to burn yourself. Park your car and allow it to cool down: Before you touch your cooling system at all, whether it is opening the radiator cap, whether it is opening the radiator petcock, or it is losing any water hose, always make sure that the system isn’t hot. You’ll be needing some common hand tools. To flush your clogged radiator yourself, you need the following You shouldn’t wait until you notice symptoms of a partially clogged radiator or symptoms of a completely blocked radiator before flushing it. So, it is necessary you flush it as the manufacturers recommend. Your radiator helps in cooling your engine. How to flush a clogged radiator step by step guides:Ī radiator flush is an essential part of car maintenance. In this article, I’ll show you step by step how to flush a clogged radiator so you will save hundreds of dollars from maintenance costs. A clogged radiator is usually caused due to a cooling system that hasn’t been serviced or flushed for a long time or due to contaminated or old radiator antifreeze.Ī fluid that has been in your radiator for a very long time without running your engine or the one that has not been changed for long will attract rust and sediments that clog radiator finds and pipes. Have you ever experienced a severe engine overheat? It could be due to a clogged radiator or blown head gasket, which could lead to other engine problems.
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