You’ve probably previously heard about the famous EGR valve, the anti-pollution valve. It is not usually appreciated by motorists because it has a tendency to create more concerns than anything else… In actual fact, dependant upon the use you are going to make of your automobile, it can become clogged and bring about you a lot of concerns. If this is the situation, you are probably concerned about how to clean the EGR valve of your Infiniti M ? Don’t stress, we’ve made this article to help you with this procedure. To do so, we will first take a look at the role of the EGR valve, then what are the failures that the EGR valve of your Infiniti M can bring on and at last the section that will probably concern you the most, how to clean the EGR valve Infiniti M?


How to Clean your Infiniti M 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 match EURO standards on Infiniti M . It will consequently influence the quality of exhaust gas output and eradicate toxic particles, mainly Nitrogen Oxide.

Operation of the EGR valve

Before we learn how to clean the EGR valve on your Infiniti M , we will have a look at how it functions. As seen just before, its task is to clean the exhaust gases, so it will be installed 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 work mostly at low speed because at high speed the combustion is sufficient to burn all these gases.

How to clean your Infiniti M EGR valve: Identifying faults

The EGR valve, nevertheless very important to limit the pollution emissions of your Infiniti M , will unfortunately tend to clog up because of soot/gas deposits that will accumulate in its mechanism, which will ultimately risk blocking the operation of the valve, until completely blocking the engine, here are the signs of illness that a faulty EGR valve on your Infiniti M can trigger:

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

How to clean your Infiniti M EGR valve: In practice

And now we’ll commence the section you are most interested in, how to clean the EGR valve of your car. Here are the two approaches that you can use.

Do it yourself

How to clean your Infiniti M EGR valve system: Without taking it apart

Even though this methodology 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, similar to the products used to clean the injection. These specific products 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 Infiniti M.

How to clean your car EGR valve: With disassembly

Here is the most reliable methodology, which will require sufficient access to the EGR valve to carry out the operation yourself. If so, the procedure 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 achieved, now comes the time for cleaning. To make this happen, 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 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 Infiniti M.

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 complications (removing too many elements that hinder access for example), how to clean the EGR valve of your Infiniti M? In such a case, it would be better rather than launching yourself into an overly complex procedure, you turn to an auto mechanic. He will be able to do the job more cleanly and will be able, if required, 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 Infiniti M

At last, some people make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Infiniti M, they just prefer to block it in the closed position. This manipulation 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 finally 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 check out our dedicated page.

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