Just got the Z back from a local rod shop that was suppposed to setup the NOS system for me and investigate an ignition switch issue (whether the ACC portion of the switch was wired correctly).
After some time, almost 2 months, the owner of the shop stated that he was having a hard time getting the Z to start after doing some work on the ignition switch wiring. I put him in touch with John @ Speartech who said that the problem sounded like a major vacuum leak (car would crank for a long while before firing, then would be pig rich and miss on several cylinders). BTW, it ran well going in to the shop.
I got a call from the owner that the issue had "cleared up" and the Z was ready to get picked up. I went this past Tuesday to pick it up and although it took forever to get started, the car seemed to run smoothly. About 5 miles in to the trip home, the Z began missing extremely bad and loosing power, all intermitently. The car died several times on the way home and would seem to be running on 3 or 4 cylinders. The farther I went, the worse it got, to the point that I was really focussed on just getting home.
Long story short, I pulled the plugs as I can't even get the car to start now. The plugs for the front 4 cylinders look good, but the back four look flooded. I've checked the obvious (vacuum leaks, etc) and can't see any thing out of the ordinary.
Anyone have any thoughts (other than take the car back)? Fuel pump is running and is developing good pressure, but the car just isn't firing.
Thanks in advance - I'm down to my last two hairs with this thing...
Bryan