[KTL]

Sounds like the ISV is working so i'm gonna jump on the intake leak bandwagon too.

These inhex nuts seem to come loose rather easily. I'd recommend anyone doing this job to replace the plain washers that are underneath the nuts with lockwashers. Good insurance in my opinion.

Problem is, the inhex nuts are hard to get at with the motor in place. You just can't get a hex key socket, ball end hex key, or any other combination of universal joints, extensions and whatnot to get at all the nuts. When I R&R'd my intake (thankfully with the motor out of the car) I used a long 8mm ball-end hex key with the bend cut off of it to get at some of the nuts. I didn't know of any other way. This allowed me to somewhat evenly torque all of the nuts.

I recall others mentioning in previous topics that even with new gaskets the intake still leaked a bit. The recommendation of using the copper gasket sealant is a good one. I remember another person recommended some type of GM non-hardnening sealant in past topics. I also think those plastic spacers that are sandwiched between the two gaskets tend to shrink and/or crack with age and add to the leakage problem?

Sounds like you're narrowing the problem down. Good luck!