EGR Valve: Testing and Inspection
Linear Exhaust Gas Recirculation (EGR) Valve1. Inspect the air passage for a restriction. If there is restriction, remove the object. Do not use any type of solvent, it may damage electrical system of EGR valve.
2. Inspect restriction for valve movement. If there is restriction remove the object.
For more testing information, Exhaust Gas Recirculation (EGR) System Check