The EGR valve or exhaust gas recirculation system retains and converts exhaust gases to keep the engine powered.The EGR valve reuses 5% to 35% of the exhaust gases, thus reducing toxic emissions. Over time, EGR valves can become clogged and cause a variety of engine damage. If it becomes completely clogged, the valve will no longer function properly, causing pollution. So if you see black smoke coming out of your exhaust, it’s probably time to clean your EGR valve.
Here’s how to clean the EGR valve without disassembling the engine.
Step-by-Step Guide to Cleaning the EGR Valve
The EGR valve is one of the important emission control devices in your car’s engine. It is located between the exhaust manifold and the intake manifold. It recycles exhaust gases at the intake manifold to reduce the toxic oxides of nitrogen (NOx).The EGR valve operates primarily at lower engine speeds, when the car emits the most NOx.
A clogged EGR valve has the potential to damage other parts of the engine, especially the fuel injectors. The intake circuit may also be damaged. It is therefore important to clean the EGR valve before it is too late. Replacing the EGR valve is sometimes necessary, but cleaning the EGR valve usually solves the problem.
Symptoms of a damaged EGR valve
A person is cleaning the EGR valve
The EGR valve is responsible for controlling toxic nitrogen oxides
Some symptoms of a broken EGR valve may indicate that it is time to clean it:
Loss of engine power: A clogged EGR valve can reduce engine performance.
Black Smoke from the Exhaust: The exhaust system of your car produces black smoke due to the presence of glycerite.
Increased Fuel Consumption: The engine needs more fuel to move forward, thus causing more pollution.
Engine warning light: A warning light on the dashboard indicates a malfunctioning of the vehicle’s anti-pollution system.
Therefore, when you notice one or more of the above symptoms, it is necessary to clean the EGR valve. If the symptoms persist, it is recommended that you take your vehicle to a professional to have the EGR valve replaced. You can follow these tips when choosing an auto repair store.
In addition, you can also use your five senses to detect car malfunctions.
How to clean the EGR valve
EGR valve on the table
Frequent checking of the EGR valve can prevent it from clogging up
Many people think that EGR can be cleaned or not. In fact, cleaning the EGR valve is not a complicated task and does not require any sophisticated tools. A set of wrenches and screwdrivers, a toothbrush or brush, and some carbon or gasoline cleaner are enough to get the EGR as clean as a whistle.
You can optimize your vehicle’s performance by following these steps to clean the EGR valve.
Step 1: Park your vehicle on a level surface
Before you begin the cleaning procedure, make sure your car is parked on a level surface. You will need to turn off the vehicle engine and remove the negative battery terminal.
Step 2: Remove the EGR valve
Remove the EGR valve of your car. Be careful, though, as some models have an EGR valve that is difficult to access. In this case, it is recommended to go directly to a garage.
Step 3: Remove the scale
You don’t have to go to a garage to clean the EGR valve!
You will need to scrape off any contaminants that have accumulated on the valve
After removing the EGR valve, you can spray it with EGR Valve Cleaner Spray. Let the product sit for 5 to 10 minutes, then scrape off the scale with a scraper or brush. You can also clean by spraying the cleaning spray directly onto accessible parts of the vehicle.
Step 4: Reassemble the EGR Valve
Once the EGR valve has been cleaned, you are ready to reassemble it to your car. However, on some models, a diagnostic tool is required to refit the EGR valve.
Step 5: Pour cleaner into the water tank
In order to also clean the inaccessible areas of the engine, it is worth pouring the EGR valve cleaner into the car’s water tank. To do this, there must be at least 20 liters of fuel in the tank to mix it correctly.
Step 6: High-speed driving
After pouring the EGR valve cleaner additive into the fuel tank, you need to drive the car at maximum speed. This will increase the engine temperature, which will activate the cleaning power of the additive poured into the fuel tank. All you have to do is drive at high RPMs. This also cleans the air filter of your car’s engine.
You will need to perform regular descaling to prevent the EGR valve from becoming clogged. If your EGR valve is clogged, the only solution is to have it replaced at a garage.
Cleaning the EGR valve is a step that should not be taken lightly. In fact, it is one of the key components in ensuring that your vehicle’s anti-pollution system is up to standard and functioning properly. If the latter does not meet current standards, you will be fined while driving and you may be refused a technical inspection.