Well I tried hooking up a vacuum guage to see if it was around what it was supposed to be, but I wasn't getting a reading anywhere. I hooked up the hose from the guage to all of the nipples coming from the charcoal canister, but I didn't get anything. I hooked up the guage to the nipple coming from the throttle body that goes to the canister, still nothing. I'm assuming I'm doing something wrong... Any help? I've never done this before.