I realized that the "hatch finisher pannel" needed to be addressed. There were two clear points of entry: first, exhaust could enter straight through the latch assembly and enter the hollow of the hatch itself. Second, exhaust could enter the hatch through the weep holes. The weep holes are outside the rubber hatch seal. When I took the car to John, I had already removed the apolstery (hatch finisher pannel) from the interior of the hatch in my own attempts to investigate the problem. I realized that the cardboard backed apolstery pannel, that was held to the hatch by a series of sheet metal screws, was never gonna be airtight. In the case of my car, this was such an obvious point of entry, that I wanted a bullet proof solution. So John started by sealing the latch openings with silicone and installed appropriate rubber plugs in the weep holes. But we took it a step further- John fabbed a sheet aluminum pannel to replace the crappy finisher pannel. This new rigid pannel was installed with a silicon seal. Nothing is coming though now ...or ever. I think for those of us who have been beaten by this fume problem, it is this kind of redundency that will ensure a safe car. In this thread, ALL THE ADVISE IS CORRECT. It is a multi-tiered problem. Our cars are 300hp blocks of swiss cheese. I had redone my hatch seal ...but John found that it still wasn't sealing. I thought I was done ...I wasn't. I had another Z guy look at it months ago. He said he had addressed the hoses between the tank and vapor tank. John discovered that he had not been thorough. There were still hoses that were fuel soaked needing to be replaced. John, what was it that was cracked on the top of my tank?
At any rate, I still haven't gotten to the firewall, and I'm sure that that will further resolve any remaining smells; although at this point, it just holds the residual smell of an old sports car that was allowed to stink for too many years.
Hey Zfan, violacleff, ezzzzzzz, sparks280, how are you guys coming with your gas chambers?
Josh