EGR Valves - The Main Cause of Failure

As reducing emissions becomes a bigger priority for automotive manufacturers, more complex technology is required to achieve better results. The Exhaust Gas Recirculation system has become more effective with each evolution, but contamination can cause the part to stop working properly or fail completely. In this 22-minute free webinar, you will learn what causes most EGR valve failures, how to test for it, and what are the best remedies for it.

We’ll teach you what EGR valves are and how they work. We’ll show a basic diagram of the EGR’s role in the combustion process and how it improves engine performance and reduces emissions. You’ll learn the preventable cause of failure for most EGR valves returned to Valeo Service. Discover the best practices for maintaining and testing EGR valves and expert recommendations for dealing with EGR related issues.

Euro emissions standards have become stricter over time and required increases in efficiency. This means that there are differences between older and newer EGR valve designs and between EGRs for diesel and petrol engines. Discover how these various designs work differently and what improvements have been made over time. We’ll debunk some common misconceptions about EGR valves and will teach you the right and wrong ways to prevent contamination in the first place.

Vehicle inspection failures are rapidly increasing due to one common cause of EGR valve failure. Learn what’s behind it and how the part becomes contaminated. We’ll explain the process with a diagram and will show images of different levels of contamination. Discover how soot forms and what effects it has on the engine. You’ll learn how to identify the root cause of EGR issues and avoid contaminating new replacement parts.

There are several ways to test an EGR system, so it’s important to learn the proper way to test EGR valves depending on EGR design and engine type. We’ll tell you what tools to use for diagnosis and what EGR failure symptoms to check for. Discover the most common EGR valve fault symptoms and their most likely causes. Learn how some EGRs can still be contaminated despite showing no faults in the test. We’ll walk you through the proper way to clean a dirty EGR system, and we’ll explain the right and wrong way to remedy EGR valve contamination.

Valeo is a leader in Exhaust Gas Recirculation systems and makes parts like EGR valves and 

EGR Heat Exchangers for OE manufacturers and aftermarket parts. If you’re looking for a specific part, search by model, VIN, or part number on the Valeo Tech@ssist part finder portal. You can find product information and more webinars in Tech@ssist, like our webinar on EGR coolers or our overview of Euro Emissions Standards.

In this webinar, you will learn:

• What is an EGR valve and how does it work
• How to test EGR valves 
• How to remedy EGR valve contamination

Afterwards, you can download materials like Technical Service Bulletins on premature EGR failure and EGR valve contamination. It’s a good idea to keep these on hand for reference when repairing EGR systems.

                                                                                                                                        
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