You’ve likely previously heard about the renowned EGR valve, the anti-pollution valve. It is not usually appreciated by drivers because it has a tendency to develop more concerns than anything else… In truth, determined by the use you are going to make of your car, it can become clogged and bring about you a lot of problems. If this is the situation, you are likely wondering how to clean the EGR valve of your Hyundai Sonata ? Don’t get worried, we’ve prepared this article to help you with this procedure. To do this, we will initially take a look at the intent of the EGR valve, then what are the failures that the EGR valve of your Hyundai Sonata can reason and finally the section that will likely appeal you the most, how to clean the EGR valve Hyundai Sonata?
How to Clean your Hyundai Sonata EGR Valve: Role and Operation
Purpose of the EGR valve
The EGR valve of your car has been added to diesel engines primarily to reduce pollution emitted by cars and to meet EURO measures on Hyundai Sonata . It will as a consequence control the quality of exhaust gas output and get rid of toxic particles, mainly Nitrogen Oxide.
Operation of the EGR valve
Before we learn how to clean the EGR valve on your Hyundai Sonata , we will check out how it functions. As seen just before, its goal is to clean the exhaust fumes, 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 get rid of all unburned toxic particles. It will perform mostly at low speed because at high speed the combustion is enough to burn all these gases.
How to clean your Hyundai Sonata EGR valve: Identifying faults
The EGR valve, despite the fact very useful to limit the pollution emissions of your Hyundai Sonata , will unfortunately tend to clog up because of soot/gas deposits that will build up in its system, which will inevitably risk obstructing the functions of the valve, until completely blocking the engine motor, here are the symptoms that a faulty EGR valve on your Hyundai Sonata can trigger:
- Motor light on
- Power loss
- Technical inspection refused
- Black fumes
- Car that grazes at low speed
- Low RPM settings
How to clean your Hyundai Sonata EGR valve: In practice
And now we’ll start the section you are most intrigued by, how to clean the EGR valve of your car. Here are the two techniques that you can use.
Do it on your own
How to clean your Hyundai Sonata EGR valve system: Without dismantle
Despite the fact this technique is less effective, it is however possible to consider a “rough” cleaning of your EGR valve, the reality is, you will only need to use fuel additives, equivalent to the products used to clean the injection. These particular 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 Hyundai Sonata.
How to clean your car EGR valve: With disassembly
Here is the most reliable technique, which will require enough access to the EGR valve to execute the treatment without help. 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 steps are finished, now comes the time for cleaning. To achieve 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 Hyundai Sonata.
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 elements that hinder access for example), how to clean the EGR valve of your Hyundai Sonata? 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 carry out the job more cleanly and will be able, if necessary, 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 Hyundai Sonata
Finally, some people make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Hyundai Sonata, they just prefer to block it in the closed position. This modification will have the effect of greatly increasing the pollution emitted by the car, of no longer complying with pollution requirements, of having an engine warning light permanently on and finally 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 be reluctant to check out our dedicated page.
If you want more guides on the Hyundai Sonata, go to our Hyundai Sonata category.
