Possible vacuum problem
 

I have an 87 iroc 350 tpi that idles fine when cold but when warms up has a high idle. When searching for vacuum leakes I noticed there is no vacuum being pulled from the smaller line to the canister. This line goes from canister to under throttle body, then to egr solenoid. Is this normal? Vacuum right at the throttle body is 17.

Thanks in advance