OK. I wanted to give everyone an update. I jacked up the car to see how it is hooked up. I do not have this valve in the picture. Instead that same line runs to the front of the car to the charcoal canister. I am going to have to figure out what is going on with this thing. I pulled my fuel sender out of the tank and it had imploded. The rod was bent and the case was all distorted. That is how much vacuum was created on a long trip. I have been reading on this forum and others that if there is an issue with the vapor system this can happen. My problem is all my parts are new. I have a new charcoal canister, new check valve, new hoses etc. Any ideas?