No spark 300zx

[Altimas13]

Alright so i haven't been able to start my 90 300zx tt for about a month now. I am not getting any spark. I've replaced all coils, the PTU, the harness, and the CAS. All my relays are good and same with fuses. I tested for voltage at my coils and everyone is getting power but the voltage jumps around between 2 and 11 volts. I did an ecu diagnostics and came back with 55 meaning nothing wrong. I should also mention when i replaced the PTU it started once and the next day it wouldn't start again so i replaced the harness and it started then died after about a minute. Any suggestions would be greatly appreciated.

[MaximA32]

Have you checked your fuel pump control module? Those have a tendency to crap out after a while.

[Da Gambit X]

perhaps you're distributor may be dirty or fouled up which would make it not complete the circuit to your spark plugs