You’ve almost certainly already read about the famous EGR valve, the anti-pollution valve. It is not generally appreciated by car owners because it tends to create more problems than anything else… In actual fact, depending on the use you are going to make of your vehicle, it can become clogged and bring about you a lot of concerns. If this is the situation, you are almost certainly wanting to know how to clean the EGR valve of your Infiniti QX80 ? Don’t stress, we’ve prepared this content page to help you with this procedure. To do this, we will first take a look at the intent of the EGR valve, then what are the failures that the EGR valve of your Infiniti QX80 can bring about and at last the part that will almost certainly interest you the most, how to clean the EGR valve Infiniti QX80?

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How to Clean your Infiniti QX80 EGR Valve: Role and Operation

Goal of the EGR valve

The EGR valve of your car has been added to diesel engines mainly to lower pollution released by vehicles and to match EURO requirements on Infiniti QX80 . It will as a result influence the quality of exhaust gas output and get rid of toxic particles, mainly Nitrogen Oxide.

Operation of the EGR valve

Before we discover how to clean the EGR valve on your Infiniti QX80 , we will take a look at how it functions. As described before, its task 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 get rid of all unburned toxic particles. It will work mostly at low speed because at high speed the combustion is enough to burn all these gases.

How to clean your Infiniti QX80 EGR valve: Identifying faults

The EGR valve, although very important to limit the pollution emissions of your Infiniti QX80 , will regrettably tend to clog up because of soot/gas deposits that will accumulate in its system, which will finally risk blocking the operation of the valve, until entirely blocking the engine unit, here are the signs of illness that a defective EGR valve on your Infiniti QX80 can cause:

  • Motor light on
  • Power loss
  • Technical inspection rejected
  • Black gases
  • Car that grazes at low speed
  • Low RPM settings

How to clean your Infiniti QX80 EGR valve: In practice

And now we’ll start the part 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 on your own

How to clean your Infiniti QX80 EGR valve system: Without taking it apart

Although this procedure is less effective, 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 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 Infiniti QX80.

How to clean your car EGR valve: With disassembly

Here is the most efficient procedure, which will require enough access to the EGR valve to accomplish the treatment without help. If so, the operation is fairly easy. 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 accomplish 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 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 Infiniti QX80.

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 troubles (removing too many auto parts that hinder access for example), how to clean the EGR valve of your Infiniti QX80? In cases like this, it would be better rather than launching yourself into an overly complex procedure, 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 depending on the difficulty of access is between 70 and 300 €.

Remove the EGR valve of your Infiniti QX80

Finally, a number of people make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Infiniti QX80, they simply prefer to block it in the closed position. This treatment will have the consequence of greatly increasing the pollution released by the vehicle, of no longer complying with pollution requirements, of having an engine warning light permanently on and in the end risk fouling the engine. We strongly recommend against making this choice. If you have other questions or want to learn more about your car, don’t be reluctant to check out our dedicated page.

If you wish more tutorials on the Infiniti QX80, go to our Infiniti QX80 category.