You’ve most likely previously read about the well-known EGR valve, the anti-pollution valve. It is not generally appreciated by drivers because it is likely to develop more concerns than anything else… In truth, dependent on the use you are going to make of your automobile, it can become clogged and bring about you a lot of problems. If this is the case, you are most likely concerned about how to clean the EGR valve of your Scion xB ? Don’t be anxious, we’ve well 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 Scion xB can provoke and to finish the section that will most likely appeal you the most, how to clean the EGR valve Scion xB?
How to Clean your Scion xB EGR Valve: Role and Operation
Goal of the EGR valve
The EGR valve of your car has been integrated to diesel engines primarily to lower pollution released by vehicles and to fulfill EURO measures on Scion xB . It will consequently control the quality of exhaust gas output and reduce toxic particles, mainly Nitrogen Oxide.
Operation of the EGR valve
Before we discover how to clean the EGR valve on your Scion xB , we will check out how it operates. As seen before, its goal is to clean the exhaust fumes, 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 reduce all unburned toxic particles. It will perform mostly at low speed because at high speed the combustion is sufficient to burn all these gases.
How to clean your Scion xB EGR valve: Identifying faults
The EGR valve, even though very useful to limit the pollution emissions of your Scion xB , will regrettably tend to clog up because of soot/gas deposits that will accumulate in its mechanism, which will eventually risk obstructing the operation of the valve, until completely blocking the engine unit, here are the signs of illness that a defective EGR valve on your Scion xB can bring about:
- Motor light on
- Performance loss
- Technical inspection refused
- Black fumes
- Automobile that grazes at low speed
- Low RPM settings
How to clean your Scion xB 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 methods that you can use.
Do it on your own
How to clean your Scion xB EGR valve system: Without taking it apart
Even though this technique 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, 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 Scion xB.
How to clean your car EGR valve: With disassembly
Here is the more effective technique, which will require sufficient access to the EGR valve to conduct the process without help. If so, the operation 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 simple steps are completed, 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 even 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 Scion xB.
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 elements that hinder access for example), how to clean the EGR valve of your Scion xB? In this 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 accomplish the job more cleanly and will be able, if required, 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 Scion xB
Finally, some people make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Scion xB, they simply choose to block it in the closed position. This modification will have the outcome of greatly increasing the pollution released by the automobile, of no longer complying with pollution standards, of having an engine warning light all day on and eventually 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 hesitate to check out our dedicated page.
In the event that you have any further questions about the Scion xB, do not hesitate to consult our Scion xB category.
