Yes to much silicon sealant on the back of the intake where the oil gauge taps in.
I have a 1994 Formula LT-1. The oil pressure gauge says 0 but the engine
> continues running quiet and there is oil flowing along the lower side of the
> head inside the valve cover. This happened after I pulled the intake
> ducting and reinstalled it. Is there something that would disable the oil
> pressure gauge in that area, or did the gauge just go bad right then by
> coincidence? Someone please help. An answer would be greatly
appreciated.
>