Possible vacuum leak?

[Final777]

Hi guys and back again reason for my rough island and everything else I believe it's called cuz I have a small Viking weight I checked all the lines and I cannot come but I do hear a slight whistle coming from my EGR valve solenoid problem is, I can't find one anywhere like anywhere at all and is there somewhere for me to check to see if this is actually what's wrong with it I know I can activate it and energize it by I guess putting the vacuum pump on it is that correct I'm not sure please help me out I don't understand this too much I have one that's got two electrical connections and I guess one of them to energize it and wants to de-energize it but it's not like the newer ones that I just have one here's a picture

 

[Final777]

Sorry about that I mean the reason for my rough idiling I believe is because of a small vacuum leak. I checked all the lines and all seem to be in good shape but I can hear a faint whistle near the EGR vacuum solenoid and I also meant to ask if I do energize and de-energize this part do I use a vacuum pump and how can I tell if it's working properly?