You’ve likely already read about the renowned EGR valve, the anti-pollution valve. It is not usually appreciated by drivers because it is likely to develop more concerns than anything else… In truth, depending on the use you are going to make of your automobile, it can become congested and cause you a lot of concerns. If this is the situation, you are likely wondering how to clean the EGR valve of your BMW 7 Series ? Don’t get worried, we’ve made this content to help you with this operation. To do so, we will first check out the purpose of the EGR valve, then what are the failures that the EGR valve of your BMW 7 Series can reason and to finish the section that will likely appeal you the most, how to clean the EGR valve BMW 7 Series?

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How to Clean your BMW 7 Series EGR Valve: Role and Operation

Purpose of the EGR valve

The EGR valve of your car has been added to diesel engines mainly to reduce pollution emitted by cars and to fulfill EURO specifications on BMW 7 Series . It will as a consequence 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 BMW 7 Series , we will take a look at how it functions. As seen just before, its objective 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 run mainly at low speed because at high speed the combustion is sufficient to burn all these gases.

How to clean your BMW 7 Series EGR valve: Identifying faults

The EGR valve, even though very effective to limit the pollution emissions of your BMW 7 Series , will regrettably tend to clog up because of soot/gas deposits that will accumulate in its mechanism, which will finally risk blocking the functions of the valve, until entirely blocking the engine, here are the symptoms that a defective EGR valve on your BMW 7 Series can provoke:

  • Motor light on
  • Power loss
  • Technical inspection refused
  • Black fumes
  • Vehicle that grazes at low speed
  • Low RPM settings

How to clean your BMW 7 Series EGR valve: In practice

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

Do it on your own

How to clean your BMW 7 Series EGR valve system: Without dismantle

Despite the fact this approach 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 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 BMW 7 Series.

How to clean your car EGR valve: With disassembly

Here is the more effective approach, which will require sufficient access to the EGR valve to perform the treatment yourself. If so, the procedure 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 steps are achieved, 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 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 BMW 7 Series.

Have it done by a professional

If, your EGR valve is not accessible because of the series or the engine of your car and if removing it would cause too many problems (removing too many elements that hinder access for example), how to clean the EGR valve of your BMW 7 Series? In cases like this, it would be better rather than launching yourself into an overly complex operation, 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 depending on the difficulty of access is between 70 and 300 €.

Remove the EGR valve of your BMW 7 Series

Finally, some individuals make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their BMW 7 Series, they just choose to block it in the closed position. This manipulation will have the outcome of greatly increasing the pollution emitted by the automobile, of no longer complying with pollution standards, of having an engine warning light permanently on and finally risk fouling the engine. We highly recommend against making this choice. If you have other questions or want to learn more about your car, don’t think twice to check out our dedicated page.

In the event that you have any further questions about the BMW 7 Series, do not hesitate to consult our BMW 7 Series category.