Cleaning the EGR valve: method and price
Content
The EGR valve in your vehicle reduces pollutant emissions. If it's too dirty, it no longer fulfills this role and your pollutant emissions will multiply. It is easy to spot the problem: if you see black smoke from the exhaust pipe, it is probably time to clean the EGR valve.
?? Exhaust gas recirculation valve: cleaning or replacing?
The exhaust gas recirculation valve reduces pollutant gas emissions. To do this, it is restored at the level intake manifold exhaust gases and cools them to reduce the amount of nitrogen oxides (NOx) rejected. It operates mainly at low revs when the vehicle emits the most NOx.
However, the operation of the exhaust gas recirculation valve makes it prone to clogging. This is because particles and soot can accumulate. V calamine formed in this way can block its valve and prevent it from functioning properly.
A blocked or HS EGR valve can damage other parts of your engine, including injectors which in turn can get dirty. v reception scheme also susceptible to damage. Therefore, it is important to intervene before exacerbating the problem.
Sometimes it is necessary to replace the EGR valve, but cleaning it often solves the problem. Cleaning the exhaust gas recirculation valve is part of regular maintenance and helps to prolong its life and prevent damage.
When the exhaust gas recirculation valve only operates at low speed, drive at high speed (3000 to 3500 rpm) after passing several kilometers within about 15 minutes, the carbon deposits that clog it usually burn out. Usage purifier can also be cleaned if it needs to be refurbished, but the EGR valve usually has to be disassembled.
However, there are some cleaners for the exhaust gas recirculation valve without disassembly. You just need to inject an aerosol into the engine inlet while the engine is running, and sometimes a second product into your vehicle's fuel tank. But heavy pollution will resist cleaning agents.
Finally, the best option remains descaling... As the name suggests, this operation, which is carried out on a specific machine, is to remove the scale build-up on your EGR valve. Your mechanic will take care of this.
We recommend driving at high speed at least once. every 20 kilometers roughly to clean the exhaust gas recirculation valve before it gets too damaged to avoid completely replacing it. By servicing it regularly, you may not need to change it at all.
However, if your EGR valve is too damaged, don't wait to have it replaced because it can have serious and costly consequences for your engine.
👨🔧 How to clean the exhaust gas recirculation valve?
There are several ways to clean the EGR valve: take it apart and use a cleaning agent, descale it with hydrogen, and drive at high speed to burn off the soot clogging it. Professional descaling is the most effective method.
Material:
- Tools
- EGR valve cleaner
Step 1. Disassemble the exhaust gas recirculation valve.
Remove the EGR valve from your vehicle. Be careful, however, as access to the EGR valve is difficult on some vehicle models. In this case, it is recommended to go directly through your mechanic.
Step 2: remove the scale
After removing the exhaust gas recirculation valve, you can spray on it to clean the exhaust gas recirculation valve. Let it sit for 5-10 minutes and then scrape off the scales with a scraper and brush. You can also spray cleaning spray directly onto accessible car parts to clean them.
Step 3. Assemble the EGR valve.
When your EGR valve is clean, you can reinstall it on your vehicle. However, on some models, reassembling the exhaust gas recirculation valve requires the use of a diagnostic tool available only from garages.
Step 4: Pour the cleaner into the reservoir.
To also clean inaccessible parts of the engine, an EGR valve cleaner should be poured into your vehicle's tank. To do this, your tank must have at least 20 liters of fuel in order for the mixture to work out correctly.
Step 5: drive at high revs
After the EGR valve cleaning additive is poured into the tank, you need to drive the car, forcing it to climb the towers. This will raise the temperature of the engine and thus activate the cleaning power of the additive in your tank.
To do this, all you have to do is get onto the highway and drive at high speed. It will also clean your particulate filter, if your vehicle has one.
As a reminder, the easiest solution to keep the EGR valve clean is to regularly descale to prevent fouling and clogging of the EGR valve. However, if your EGR valve is already too dirty, the only solution available is to have it replaced in the garage.
💸 How much does it cost to clean the exhaust gas recirculation valve?
Cleaning the EGR valve when driving at high speed is free, except for the fuel required for this trip. However, the most reliable way to clean the EGR valve is to descale. Then calculate the price 90 € for descaling the exhaust gas recirculation valve by a professional.
Finally, the exhaust gas recirculation valve can be cleaned with a cleaning agent. You can find exhaust gas recirculation valve cleaning kits in specialist dealers and car dealerships. Their price from 15 to 40 €.
Now you know everything about cleaning the EGR valve. As you can see, descaling is the best way to clean the EGR valve, especially if the blockage is already quite severe. If it is too severe, you will not be able to avoid replacing the EGR valve. Therefore, we advise you to periodically drive at high speed to clean the EGR valve.
