My Wife owns a 1996 Pontiac Bonneville that sat for 2 months because the water pump was out. After it was fixed I had to charge Battery to get it to start
because it set for so long. Now I have a Fuel leakat the back of engine in the center of the fuel rail behind vavle cover and coming from a black looking vavle with a large vacum hose attachedthat looks to beabout a 3/8's in size and comes from the firewall along with a second hose of thesame size.

What is this (Vavle?) called and can I get it from my local parts store?
Oh! I did check the Fuel regulator and found no leaking fuel from vacum Hose!

Please Help! I'm disabled and wife needs Car Fixed. Too unsafeto drive with afuel leak!
Thank You!