You’ve probably already heard of the renowned EGR valve, the anti-pollution valve. It is not usually appreciated by car owners because it is likely to cause more trouble than anything else… In fact, dependant upon the use you are going to make of your automobile, it can become congested and bring about you a lot of trouble. If this is the situation, you are probably wondering how to clean the EGR valve of your Mercedes Benz E Class ? Don’t stress, we’ve written this content to help you with this process. To do this, we will initially check out the intent of the EGR valve, then what are the failures that the EGR valve of your Mercedes Benz E Class can bring about and to finish the part that will probably concern you the most, how to clean the EGR valve Mercedes Benz E Class?
How to Clean your Mercedes Benz E Class EGR Valve: Role and Operation
Role of the EGR valve
The EGR valve of your car has been added to diesel engines mainly to reduce pollution emitted by vehicles and to meet EURO specifications on Mercedes Benz E Class . It will as a result control the quality of exhaust gas output and eradicate toxic particles, mainly Nitrogen Oxide.
Operation of the EGR valve
Before we discover how to clean the EGR valve on your Mercedes Benz E Class , we will check out how it works. As seen just before, its goal is to clean the exhaust gases, so it will be located at the engine outlet, thanks to a valve, it will be able to return the unburned exhaust gases to the engine for a second burn which will eradicate all unburned toxic particles. It will function mainly at low speed because at high speed the combustion is enough to burn all these gases.
How to clean your Mercedes Benz E Class EGR valve: Identifying faults
The EGR valve, even though very effective to limit the pollution emissions of your Mercedes Benz E Class , will regrettably tend to clog up because of soot/gas deposits that will build up in its system, which will inevitably risk obstructing the functions of the valve, until completely blocking the engine motor, here are the signs of illness that a defective EGR valve on your Mercedes Benz E Class can trigger:
- Motor light on
- Power loss
- Technical inspection refused
- Black fumes
- Car that grazes at low speed
- Low RPM settings
How to clean your Mercedes Benz E Class EGR valve: In practice
And now we’ll begin the part you are most intrigued by, how to clean the EGR valve of your car. Here are the two methods that you can use.
Do it on your own
How to clean your Mercedes Benz E Class EGR valve system: Without taking it apart
Even though this approach is less efficient, it is however possible to consider a “rough” cleaning of your EGR valve, actually, you will only need to use fuel additives, similar to the products used to clean the injection. These specific solutions must be injected into the running engine, at the right operating temperature, diluted in about 20 litres of fuel and run the engine for 3 or 4 minutes in high rev to clean the EGR valve of your Mercedes Benz E Class.
How to clean your car EGR valve: With disassembly
Here is the most beneficial approach, which will require enough access to the EGR valve to carry out the treatment yourself. If so, the operation is fairly straightforward. You will need to disconnect the electromagnet from the EGR valve, remove the few screws that hold it in place, and remove it. Once these simple steps are accomplished, now comes the time for cleaning. To do this, you will need to use a product such as solvent, petrol, oven cleaning product, which you will leave to act for ten minutes, then scrape off the rest using a scraper, finish cleaning with wire brush. If you want to go further, you can also clean the two conduits on which it is connected which may be scorched, for this, use a scraper and a vacuum cleaner to avoid dropping deposits in the conduits. You will only have to reassemble it and you will have finished cleaning the EGR valve of your Mercedes Benz E Class.
Have it done by a professional
If, your EGR valve is not reachable because of the series or the engine of your car and if removing it would cause too many problems (removing too many parts that hinder access for example), how to clean the EGR valve of your Mercedes Benz E Class? In this case, it would be better rather than launching yourself into an overly complex process, you turn to an auto mechanic. He will be able to perform the job more cleanly and will be able, if necessary, to change the valve if it is dead. The cost of cleaning dependant upon the difficulty of access is between 70 and 300 €.
Remove the EGR valve of your Mercedes Benz E Class
Finally, some people make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Mercedes Benz E Class, they simply prefer to block it in the closed position. This modification will have the consequence of greatly increasing the pollution emitted by the automobile, of no longer complying with pollution criteria, of having an engine warning light all day on and in the end risk fouling the engine. We highly suggest against making this choice. If you have other questions or want to learn more about your car, don’t be reluctant to take a look at our dedicated page.
Whenever you have any additional questions about the Mercedes Benz E Class, do not hesitate to consult our Mercedes Benz E Class category.
