My wife has a g35 sedan. she says when she feels up her car sputters at idle. fine on acceleration though. after she drives for a few days it goes back to normal till the next time she feels up. Also, I know the float in the gas tank is not accurate cause the fuel gauge fluctuates a lot. Any idea what's causing the idol sputtering? could the pump be causing that or the float and strainer?
Thanks in advance for any and all help.