Symptoms of a Clogged EGR
by Jen DavisMost modern vehicles come equipped with an Exhaust Gas Recirculation valve, otherwise known as the EGR valve. The EGR valve is designed to control the amount of nitrous oxide that builds up in your motor by releasing some of the gases back into the motor and venting the rest out.
The “dirt” that causes your EGR valve to become clogged is not the same kind of dirt you find on the ground. The build-up is actually carbon deposits that accumulate inside your EGR valve and harden. When carbon builds up inside your EGR valve, your car will not run properly.
You can check for carbon-build up by removing your EGR valve and inspecting it for hardened clogs or deposits. A clogged EGR valve has several symptoms.
Stalling
Idling Problems
Knocking or Popping
References
Writer Bio
Jen Davis has been writing since 2004. She has served as a newspaper reporter and her freelance articles have appeared in magazines such as "Horses Incorporated," "The Paisley Pony" and "Alabama Living." Davis earned her Bachelor of Arts in communication with a concentration in journalism from Berry College in Rome, Ga.