Electrical/Fuel Woes?

[Mr.Woof's72z]

I haven't posted on here much, but I've been driving my '72 240Z for almost 3 years now. Until recently she didn't have any mechanical woes besides a point replacement or valve adjustment here or there. And then...

I was cleaning up the engine bay, getting the last bits of crud and accumulated gunk from 40+ years, and all around just getting her looking nice (wash, wax, polish). When I went to start the car up...nothing. Turned over, but wasn't getting a spark at all. A friend and I tried to figure out what went wrong, traced back through the wiring harness to see if there was any damage or a wire that was pulled loose. The only way we could get the car to fire was to bypass the resistor.

Since it was an old coil/resistor I decided to pick up a new MSD Blaster II and matching resistor and throw it in. I was still getting full voltage from my wires so I wired up the new resistor and coil and the car started right up. About 20 seconds into it's idle it started lagging, and eventually died. The wiring on the original distributor has two black and white wires and a green and white wire, black and white coming from the "start" position and green and white coming from the "run" position from what I remember from looking at a wiring diagram.

After it died, I just wired up a 12v wire to one side of the resistor and the other side of the resistor to the coil with the included jumper from the MSD resistor. Had the same problems, started up GREAT, idled well for 15-20 seconds, then slowly died.

I have asked a few knowledgeable people here and there, most have said that something is getting too hot in the wiring/distributor, causing things to overheat and go down. A few other people have said that the fuel pump/lines are the root of all this evil. I know very little on the fuel pump for these cars, so it could be something along those lines that I have completely missed, but it was running so perfectly for so long right before I decided to clean up the engine bay, which makes me think that the fuel system is not the issue at hand. I consider myself a weekend mechanic who is terrible at troubleshooting, so I'm looking to you guys for some help/hinters or just some ideas that I have blanked on, any help is greatly appreciated!

Car set-up:

L24 w/ E88 head

Mild cam (unknown duration, etc)

Weber 40DCOE's

6 into 2 headers

Monza exhaust

MSD Blaster II coil w/ resistor

Aside from some Tokico springs, some body mods, and what is listed above everything is stock. This car is too much fun to let it sit! Please help!