You’ve probably previously read about the famous EGR valve, the anti-pollution valve. It is not usually appreciated by drivers because it is likely to cause more trouble than anything else… In actual fact, determined by the use you are going to make of your car, it can become congested and bring about you a lot of concerns. If this is the situation, you are probably wanting to know how to clean the EGR valve of your Mercury Milan ? Don’t get worried, we’ve made this article to help you with this process. To do so, we will first take a look at the purpose of the EGR valve, then what are the failures that the EGR valve of your Mercury Milan can reason and to finish the part that will probably interest you the most, how to clean the EGR valve Mercury Milan?


How to Clean your Mercury Milan EGR Valve: Role and Operation

Role of the EGR valve

The EGR valve of your car has been added to diesel engines principally to lower pollution emitted by automobiles and to meet EURO specifications on Mercury Milan . It will therefore control the quality of exhaust gas output and eliminate toxic particles, mainly Nitrogen Oxide.

Operation of the EGR valve

Before we discover how to clean the EGR valve on your Mercury Milan , we will check out how it functions. As seen before, its objective is to clean the exhaust gases, so it will be positioned 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 eliminate all unburned toxic particles. It will work mainly at low speed because at high speed the combustion is sufficient to burn all these gases.

How to clean your Mercury Milan EGR valve: Identifying faults

The EGR valve, even though very useful to limit the pollution emissions of your Mercury Milan , will regrettably tend to clog up because of soot/gas deposits that will build up in its mechanism, which will eventually risk blocking the functions of the valve, until totally blocking the engine unit, here are the signs of illness that a faulty EGR valve on your Mercury Milan can provoke:

  • Motor light on
  • Performance loss
  • Technical assesment rejected
  • Black fumes
  • Automobile that grazes at low speed
  • Low RPM settings

How to clean your Mercury Milan EGR valve: In practice

And now we’ll start the part you are most curious about, how to clean the EGR valve of your car. Here are the two ways that you can use.

Do it yourself

How to clean your Mercury Milan EGR valve system: Without dismantle

Despite the fact this process is less efficient, it is however possible to consider a “rough” cleaning of your EGR valve, in fact, you will only need to use fuel additives, equivalent to the products used to clean the injection. These particular 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 Mercury Milan.

How to clean your car EGR valve: With disassembly

Here is the best process, which will require sufficient access to the EGR valve to execute the process on your own. If so, the procedure is fairly simple. 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 completed, now comes the time for cleaning. To get this done, 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 as well clean the two canal 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 Mercury Milan.

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 Mercury Milan? In cases like this, it would be better rather than launching yourself into an overly complex process, you turn to an auto mechanic. He will be able to accomplish the job more cleanly and will be able, if required, to change the valve if it is dead. The cost of cleaning determined by the difficulty of access is between 70 and 300 €.

Remove the EGR valve of your Mercury Milan

At last, some people make a more radical decision to limit the risk of a failed valve. Instead of cleaning the EGR valve of their Mercury Milan, they just prefer to block it in the closed position. This treatment will have the consequence of greatly increasing the pollution emitted by the car, 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 strongly advise against making this choice. If you have other questions or want to learn more about your car, don’t hesitate to take a look at our dedicated page.

Whenever you have any further questions about the Mercury Milan, do not hesitate to consult our Mercury Milan category.