Hi all,

I have a 2003 350z non rev up. I completed an OEM engine rebuild and upon installation I have a no start issue. The root cause is I have no injector pulse or ignition spark.

My only question is what system would cause an injector and ignition cut simultaneously?

Here is a list of tests I have already performed:

-All coil pack connectors have 12v ignition power, constant ground and continuity to trigger outputs on ecu

- all injectors have 12v ignition power and continuity to trigger outputs on ecu

-battery to body ground good
-body to 2x motor grounds good
-loom to engine ground good

-NATS system good, red light blinks with ignition off and goes out with ignition on, with brand new keys confirmed working.

-no codes present

any help or ideas where to test next would be greatly appreciated!

 

Cam and crank phase will give you problems. You double check your timing marks?

 

Crank triggers spark and cam triggers fuel IIRC.

 

yeah checked and double checked, also 170+ compression on all 6.

 

yeah I think that’s what the fsm quotes aswell, but both sensors have correct resistance, fsm dosent give any other information on cam crank sensors

 

so I did a test on the crank angle sensor. The middle wire is fed a constant 9 volts and when you touch something metal to the end of the sensor it drops to zero (or the other way around) however this only happens intermittently and sometimes it has no power and touching it makes it have 9v so I’m certain this is the issue. Will update when I change it but hope this helps someone else out on how to test their own sensor