You’ve likely already heard of the popular EGR valve, the anti-pollution valve. It is not always appreciated by car owners because it is likely to create more trouble than anything else… Indeed, according to the use you are going to make of your automobile, it can become clogged and trigger you a lot of trouble. If this is the situation, you are likely concerned about how to clean the EGR valve of your Lexus GS ? Don’t get worried, we’ve written this content to help you with this process. To do this, we will first check out the purpose of the EGR valve, then what are the failures that the EGR valve of your Lexus GS can reason and finally the section that will likely appeal you the most, how to clean the EGR valve Lexus GS?

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How to Clean your Lexus GS EGR Valve: Role and Operation

Purpose of the EGR valve

The EGR valve of your car has been integrated to diesel engines mainly to reduce pollution emitted by automobiles and to match EURO measures on Lexus GS . It will therefore control the quality of exhaust gas output and eliminate toxic particles, mainly Nitrogen Oxide.

Operation of the EGR valve

Before we learn how to clean the EGR valve on your Lexus GS , we will have a look at how it functions. As described 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 eliminate all unburned toxic particles. It will function mainly at low speed because at high speed the combustion is sufficient to burn all these gases.

How to clean your Lexus GS EGR valve: Identifying faults

The EGR valve, even though very important to limit the pollution emissions of your Lexus GS , will sadly tend to clog up because of soot/gas deposits that will accumulate in its system, which will inevitably risk obstructing the operation of the valve, until entirely blocking the engine, here are the signs of illness that a faulty EGR valve on your Lexus GS can cause:

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

How to clean your Lexus GS EGR valve: In practice

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

Do it yourself

How to clean your Lexus GS EGR valve system: Without dismantle

Nevertheless 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 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 Lexus GS.

How to clean your car EGR valve: With disassembly

Here is the most efficient process, which will require sufficient access to the EGR valve to accomplish the treatment on your own. If so, the process 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 steps are done, 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 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 Lexus GS.

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 difficulties (removing too many parts that hinder access for example), how to clean the EGR valve of your Lexus GS? In this instance, it would be better rather than launching yourself into an overly complex process, you turn to an auto mechanic. He will be able to carry out the job more cleanly and will be able, if required, to change the valve if it is dead. The cost of cleaning according to the difficulty of access is between 70 and 300 €.

Remove the EGR valve of your Lexus GS

At last, 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 Lexus GS, they simply choose to block it in the closed position. This modification will have the effect of greatly increasing the pollution emitted by the automobile, of no longer complying with pollution criteria, of having an engine warning light permanently on and ultimately risk fouling the engine. We strongly suggest 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.

If you have any further questions about the Lexus GS, do not hesitate to consult our Lexus GS category.