Started with a code P0300 first for a few months. Car would shake and misfire with terrible fuel economy.

Replaced my spark plugs, coil packs, cleaned throttle bodys and MAF. But none of this fixed the issue. I was still misfiring from time to time. A month after this my fuel reading was wrong. It would show me a quarter tank but it'd be empty. I was planning on fixing that but it wasn't immediate.

Replaced fuel injectors since a diagnosis at a Nissan dealership claimed some could be stuck open. Turns out they were aftermarket when I pulled them out. Back to OEM and the P0300 code still persisted.

Fast forward just a few days ago. I refuelled and my car started shifting super aggressively (used premium from a gas station I've used previously). My VDC light and traction control light both came on too. My break fluid and brake pads are just fine by the way.

My car started limping that day and also stalling. I limped all the way back home. I ended up with the same code P0300, Misfire on cylinder 3, and P010C. I replaced my spark plugs once again, cleaned throttle body, cleaned MAF sensors, and I also replaced my valve cover gasket since it was leaking.

Lots of labour for a whole lot of nothing cause now the car is giving me the same bull**** with code P0011 and as always, code P0300. It struggles to start, then it just stalls. Anyone here know what the hell is going on here?

Here's a video of the car right after struggling to start which then stalls:
I'm not to sure what to do anymore. I've heard that maybe it's the VVT Solenoid on Bank 1 due to the P0011 but I'm wondering why it's only showing up now? Any help would be amazing. Thank you. 2010 G37XS Automatic.

 

Anyone have any insight?

 

Fuel pump?

 

Our cars are all run by computers these days and when things suddenly go haywire the first thing to check is that the BCM, ECM and IPDM have not taken on water. Check the passenger side footwell for any wetness. If you find some, examine the control modules mounted above that area - on the firewall behind the glovebox and behind the kick panel to the right of the footwell. The IPDM is located under the hood and behind the battery and should have its protective plastic hood in place. It also relies on the windshield cowling to be doing its job diverting water away.

These modules, connectors and wiring harnesses all need to be dry or all kinds of crazy s#it can happen.

Let us know what you figure out.