Emission Controls
Positive Crankcase Ventilation (PCV) System
http://www.aa1car.com/library/pcv.htm
How Does a PCV System Work
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Checking the Emission Valve and Breather
https://www.howacarworks.com/engine/checking-the-emission-valve-and-breather
The crankcase emission valve governs the amount of crankcase oil fumes that are recycled into the inlet manifold for…
How to Test and Replace PCV Valve on Your Vehicle
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PCV Valve Locations and How to Find Them
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Principle of Exhaust Gas Re-Circulation (EGR)
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EGR Valve Cleaning Without Dismantling
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Fixing EGR Problems
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What are the Symptoms of a Bad PCV Valve
http://www.agcoauto.com/content/news/p2_articleid/197
AGCO provides overall lowest costs of vehicle ownership. We do this by providing extremely high quality automotive service, following the theories and practices of Dr. W. Edwards Deming., symptoms of bad PCV valve
How to Clean and Replace an EGR Valve P0400
Watch Video Source: ChrisFix
Basic Air Injection System Components and Operation
http://what-when-how.com/automobile/air-injection-system-automobile/
17.8. Air Injection System Air injection is a method of reducing exhaust emissions by injecting air into each of the exhaust ports of an engine so that air mixes with the hot exhaust and oxidises HC and CO forming H2O […]
How a Catalytic Converter Works
http://www.explainthatstuff.com/catalyticconverters.html
A simple explanation of how a catalytic converter strips out harmful gases from vehicle exhausts.
Do You Really Need a New Catalytic Converter
Watch Video Source: Scotty Kilmer
Cleaning Catalytic Converters with Sodium Hydroxide
Watch Video Source: EricTheCarGuy