Newer Infiniti driver here! I got this car from a previous owner and had to do quite a bit of fixes on it but just now it has started to shake and vibrate when idling and stopping. That’s my Main concern. My other concern is the gas gage doesn’t always show the correct amount of gas, sometimes it’ll be above a tick mark then below multiple of them within the same minute. So if anyone has any advice on either of those please lmk! Thank you!