Rough Start - Something Seems Wrong

Originally Posted by djpheer

The theorys of crank position sensor and engine temp sensors were just that. Theorys. The fix for this issue has been found and it is leaky fuel injectors. Have the dealership test each injector individually for leaks. Keep in mind however that this is only if you are experiencing the exact issue as we have. There could be many reasons for your car not starting properly, but the particulars of this issue have been documented in this thread by me, zero610, bclarke, gearhead (who ultimately provided the fix) and a few others.

Check out my youtube video that I posted earlier in this thread for an example of the problem so that you can see if yours is similar. Good luck!

Here is my video of the issue and a description:

370z hard start after sitting - YouTube