I have 2016 nissan altima with 122k miles.
About one month ago, I started it just for it to instantly die, but it did turn over. And the check engine light came on. I got it scanned it said it was the camshaft sensors so I replace those with OEM sensors. I drove it for a few days it started doing it again. Scanned it again said it was the crank position sensor. Replace that sensor with OEM. Now it has hard starts and sometimes after it starts it’ll instantly die now I now have no check engine light. I have also changed the MAF senor
So a lose terminal or cable can cause hard starts?
Of course. It can reduce system voltage.
There isn’t a way for me to check the fuel pressure under the hood that i can see
There's a test port on the fuel rail.
So I found even with the bolt tight as it can be the negative terminal is loose and can be maneuvered. But the positive terminal is snug.
You can replace the cable or, cheaper and easier, install a battery terminal shim.
I would start by checking the fuel pressure. Also check battery and alternator. They can cause things to go squirrelly.
So a lose terminal or cable can cause hard starts?
There isn’t a way for me to check the fuel pressure under the hood that i can see