shredr

Trying to fix my 98 pfinder, showing the evap codes listed in the how-to. My purge volume control valve does not look like the one in the writeup; looking at where the line taps into the intake manifold and working backwards, this is what I have for a valve: http://www.qualityresale.net/product/97-05-nissan-altima-maxima-350z-murano-purge-solenoid-vsv-switch-valve I pulled the hose off the side leading away from the valve (not the manifold side) and started the engine. Shouldn't I feel a vacuum when the car runs? If I pull the manifold side off the valve, idle rpm drops immediately. How can I test this to make sure it's toast? Thanks Ted