Jason, There are a total of four hoses attached to the Control Pressure Regulator, two on top are gas lines and two on bottom are vacuum lines. The top two lines run back to the fuel distributer, one goes to the top center port and the other goes to the bottom right side. The two vacuum lines are really just one with a ristrictor valve in between. If one of your gas lines is disconnected then this is the reason you will have hard starting problems. It also may be dangerous. You should repair this quickly. Dave Sontos VIN 02573 J Rowe wrote: > I noticed today on my car that there is a hose on the control pressure > regulator that is not connected to anything, and from the looks of it it doesn't > look like it has been connected for quite some time. The hose that I'm reffering > to is on next to the plug/connector. I would assume that this is for a gas line > connection somewhere but where at? I've had trouble a couple of times with the > car not wanting to start so could this be a probable cause of that also?