Diagnosing a Failed Emissions Test - High HC, CO and NOx Causes and Repairs

In this video I go over how you can diagnose excessive amounts of Hydro Carbons (HC), Carbon Monoxide (CO) and Nitrogen Oxide (Nox) in your exhaust. I go over how a rich or lean condition can cause one or more of these gases to be high and therefore causing you to fail emissions. Also I go over some components like the Catalytic Converter, Oxygen Sensor (O2), Ignition Coils, Spark Plug Wires, Spark Plugs, EGR Valve, which are part of your emissions systems on your car and how they effect different levels of each gas.


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Here are some other video's you may find interesting:

How to Test an Oxygen Sensor:    • How to Test an Oxygen or O2 Sensor - Plus ...  
How to Test a Catalytic Converter:    • How to Check a Catalytic Converter for Blo...  
How to Find a Vacuum Leak:    • How To Find And Fix Vacuum Leaks Fast!  

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Disclaimer:
Due to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.