You’ve likely already read about the popular EGR valve, the anti-pollution valve. It is not generally appreciated by drivers because it is likely to develop more trouble than anything else… Actually, depending on the use you are going to make of your car, it can become blocked and cause you a lot of complications. If this is the case, you are likely wondering how to clean the EGR valve of your Chevrolet City Express ? Don’t stress, we’ve made this article content to help you with this operation. To do this, we will initially look at the goal of the EGR valve, then what are the failures that the EGR valve of your Chevrolet City Express can bring on and finally the section that will likely concern you the most, how to clean the EGR valve Chevrolet City Express?
How to Clean your Chevrolet City Express EGR Valve: Role and Operation
Goal of the EGR valve
The EGR valve of your car has been added to diesel engines principally to reduce pollution emitted by vehicles and to fulfill EURO specifications on Chevrolet City Express . It will therefore control the quality of exhaust gas output and reduce toxic particles, mainly Nitrogen Oxide.
Operation of the EGR valve
Before we learn how to clean the EGR valve on your Chevrolet City Express , we will have a look at how it functions. As described before, its mission is to clean the exhaust fumes, so it will be installed 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 run mostly at low speed because at high speed the combustion is sufficient to burn all these gases.
How to clean your Chevrolet City Express EGR valve: Identifying faults
The EGR valve, despite the fact very effective to limit the pollution emissions of your Chevrolet City Express , will unfortunately tend to clog up because of soot/gas deposits that will accumulate in its system, which will eventually risk blocking the operation of the valve, until entirely blocking the engine, here are the symptoms that a faulty EGR valve on your Chevrolet City Express can bring about:
- Motor light on
- Power loss
- Technical inspection refused
- Black gases
- Car that grazes at low speed
- Low RPM settings
How to clean your Chevrolet City Express EGR valve: In practice
And now we’ll begin the section you are most interested in, 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 Chevrolet City Express EGR valve system: Without taking it apart
Despite the fact this methodology is less efficient, 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 Chevrolet City Express.
How to clean your car EGR valve: With disassembly
Here is the more effective methodology, which will require sufficient access to the EGR valve to execute the operation yourself. If so, the operation 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 guidelines are achieved, 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 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 Chevrolet City Express.
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 parts that hinder access for example), how to clean the EGR valve of your Chevrolet City Express? 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 carry out the job more cleanly and will be able, if required, 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 Chevrolet City Express
Finally, some people make a more radical decision to limit the risk of a failed valve. Rather than cleaning the EGR valve of their Chevrolet City Express, they just prefer to block it in the closed position. This treatment will have the consequence 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 eventually 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 you need more tutorials on the Chevrolet City Express, go to our Chevrolet City Express category.
