97 infiniti I30 crank no start

[speedpx]

I owned this car for about a year I bought it with this problem crank no start and I thought it was something easy to figure out, the car has around 114k miles. When I bought the car had a check engine it was the knock sensor and evap system, I just replaced the knock sensor also replaced the MAF recently. Also replaced the fuel pump like 6 months ago but that didn't fix the problem.
Car runs fine after long cranking and sometimes have to press the gas pedal in order to start faster. No current codes on the car now. I check for spark and it has spark I'm going to get a fuel pressure gauge to check fuel pressure just to make sure, after that don't know where to go maybe check for main ground I know they located by intake plenum two of then where are the rest, or that is it for grounds, any ideas . Thanks