You’ve probably already heard about the famous EGR valve, the anti-pollution valve. It is not usually appreciated by car owners because it tends to develop more concerns than anything else… In actual fact, dependent on the use you are going to make of your automobile, it can become clogged and bring about you a lot of trouble. If this is the situation, you are probably concerned about how to clean the EGR valve of your Toyota Yaris ? Don’t be anxious, we’ve well prepared this content page to help you with this operation. To do so, we will initially take a look at the role of the EGR valve, then what are the failures that the EGR valve of your Toyota Yaris can trigger and at last the section that will probably interest you the most, how to clean the EGR valve Toyota Yaris?
How to Clean your Toyota Yaris EGR Valve: Role and Operation
Role of the EGR valve
The EGR valve of your car has been added to diesel engines mostly to reduce pollution emitted by vehicles and to meet EURO measures on Toyota Yaris . It will as a consequence 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 Toyota Yaris , we will have a look at how it functions. As described before, its objective 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 operate mainly at low speed because at high speed the combustion is sufficient to burn all these gases.
How to clean your Toyota Yaris EGR valve: Identifying faults
The EGR valve, although very important to limit the pollution emissions of your Toyota Yaris , will sadly tend to clog up because of soot/gas deposits that will build up in its system, which will finally risk obstructing the functions of the valve, until entirely blocking the engine unit, here are the signs of illness that a defective EGR valve on your Toyota Yaris can cause:
- Motor light on
- Performance loss
- Technical assesment refused
- Black gases
- Vehicle that grazes at low speed
- Low RPM settings
How to clean your Toyota Yaris EGR valve: In practice
And now we’ll begin 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 yourself
How to clean your Toyota Yaris EGR valve system: Without dismantle
Although this approach is less effective, it is however possible to consider a “rough” cleaning of your EGR valve, the truth 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 Toyota Yaris.
How to clean your car EGR valve: With disassembly
Here is the most beneficial approach, which will require sufficient access to the EGR valve to conduct the operation yourself. 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 steps are completed, 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 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 Toyota Yaris.
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 difficulties (removing too many auto parts that hinder access for example), how to clean the EGR valve of your Toyota Yaris? In this case, it would be better rather than launching yourself into an overly complex operation, you turn to an auto mechanic. He will be able to do the job more cleanly and will be able, if necessary, to change the valve if it is dead. The cost of cleaning dependent on the difficulty of access is between 70 and 300 €.
Remove the EGR valve of your Toyota Yaris
At last, a number of people make a more radical decision to limit the risk of a failed valve. Instead of cleaning the EGR valve of their Toyota Yaris, they just prefer to block it in the closed position. This modification will have the consequence 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 strongly recommend 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 perhaps you have any further questions about the Toyota Yaris, do not hesitate to consult our Toyota Yaris category.
