its definately leaks between the regulator and rail, thats for sure but the first time i looked i swear it looked like it was gushing from a hole in the back(as if it were a regular hose shooting water when you open the valve on the wall all the way with no attachment on the end of the hose [you get what i mean?] )but as soon as i saw fuel I RAN to turn my car off and had somone else start it real fast..i also know that its all on the passenger side cause no fuel leaked down onto the driver side of the bellhousing..howcome it only happens when the engine is on? not when i turn the key to the on position ..i kno when i put (the bad) bbk regulator on, wen i started and jus turned the key to the on position it shot fuel out the vacuum tube it(bad diaphram)one of the 2 screws that hold the regulator into the rail i think i striped when i riped the bbk one off and tightened the old one back on.cause when i took that one off again one screw had that a little piece of aluminum in the threads .. thats the one spraying between the regulator and rail though but does that mean i need a new rail? or can i retap the rail? and i knew there was a vacuum leak..i had a friend stop by and was jus seeing what i was doing and he must have taken this hose off, it starts off in the front of the(holly systemax) upper intake right next to the elbow..the one in front..(with three little ones on the back side)...i looked in the back to find where it goes and i think i put it back in the right spot its a little vacuum spout in the back of lower manifold. and the hose from the air intake to valve cover is on..should i have metal connectors or zip ties on all the ends of vacuum hoses to?