Just rebuilt my 350z fairlady 2003 has 80k miles on after driving through a puddle
Ended up bending a rod so replaced it and rebuilt it all and put it back in and the car started at first for 10 seconds then cut out, no fault codes used snap on solus to read them. Checked all the fuses just not getting spark? Anyone have any ideas what I should be trying next? All earths are good and connectors all on didn't take the flywheel off so can't be on wrong. Please help!

 

Literally having the exact same problem....

 

Ignition coils getting power? Back track with volt meter to see were the power is not flowing.

 

check the gnd for the coil packs, terminates on the front timing cover. Missed all the time since it kinda just pokes out of the harness.

 

ended up being a bad crank sensor after all! thanks for all your help!