Vacuum Leak

[Channing]

F-150 1997 CNG I have a pronounced vacuum leak in the rear of the motor on the passenger side. In the visinity of the injector or intake gasket. It is really hard to get at. Can anybody shed any light on this???

[Channing]

Re: Vacuum Leak I FOUND IT!!!!!!!

I found the leak. All the orings were gone under what I call the cng fuel rail. I mean some were not even there.