VQ37VHR Motor bogging down at cold start; oil related?

[The Critic]

What yr? If it's 13 and earlier, possible oil pressure issue from failing oil gallery gaskets. Need to check oil pressure with a mechanical gauge.

 

[joshsmith0052]

What yr? If it's 13 and earlier, possible oil pressure issue from failing oil gallery gaskets. Need to check oil pressure with a mechanical gauge.

Not oil pressure related, at least not from Gallery Gaskets. Mine is a 2011 but I had that service done in October and this problem has existed far longer than the gallery gaskets. Also just swapped out injectors with reconditioned flow checked OEM injectors so it shouldn’t be a fuel delivery issue unless it’s coming from the fuel pump or dampener. Fuel pressure is around 48-52 at idle but have not ran a remote gauge to monitor while in motion. Battery is the next theory since my resting voltage is around 12.2V immediately after shutting off which is indicative of a weak/failing battery. Planning on swapping it out with an Optima 34R which has around 200 more CCA. I have a spare starter sitting around if I need to swap it to test that theory as well.

 

[Hall]

You can fit a 24F battery in that. Nissan switched from a 24F to a 35 at some point for weight-savings and fuel economy.