280z will not start

[ZCurves]

You need to re-check the fuse that you put in place of the Fusible Link. Also check the big White wire that connects to the Pos side of the battery. That wire is to power the EFI. If it is loose or disconnected, then nothing is going to happen.

[grantf]

still searching for probable cause..... I have 12.9 volts at the battery and the coil has 12.6 (marginal drop). so the coil has power but no spark.

So, best way to test power to the EFI is???

[grantf]

hold on a sec.......... after looking at the FSM I noticed a little box called the "transistor ignition unit" so I looked there to see if all connections were sound there and what's this????? a clipped off black wire! hmmm I wonder......

[grantf]

IT RUNNNNSSSSSSSSSSSSSSSSSS!!!!!!!!!!!!!!!! conected black wire to ground and it started right up.

yessssssssssssssssssssssssssssssss.

thanks to every one for trying to help with so little to go on you pointed me in the right direction.

[beebeecivic]

Good job! We tend to look over the little things and somehow stumble upon them on accident. The first thing I did to my Z was look at the TIU in my car (opened it up and the board was split into pieces..) But good job!