Fuel Injected Vehicles
Ensure there is no air flow from EGR solenoid valve side to air intake boot side. Then, ensure there is air flow from the air intake side to the EGR solenoid valve side.
Ensure there is no air flow from EGR solenoid valve side to air intake boot side. Then, ensure there is air flow from the air intake side to the EGR solenoid valve side.