[Wildstreak]

I have the truck running and driving now. But now I have a problem with my fuel line, the fuel line is collapsing while driving. I found out I bought regular fuel line and not diesel rated fuel lines so that might be one of the problems. But Im curious. I removed the sock from the gas sending unit and I was wondering if that could be causing the vacuum problem. Could it be the pickup not drawing fuel fast enough creating vacuum??