My 97 SunSport has been stumbling. It starts about 5-15mins after I put in the water. No backfire. It feels like a sudden bleep loss of power and repeats then it may smooth out for a bit. Also seems like its not producing the power it should. Once I start pushing throttle on and off like pulling a skier it starts in with the stumble, still a few minutes of running good at first of the day.

I've changed the fuel filter in the FCC and the hose to the pump inside is a black fuel line not the clear hose that produced problems for others.

Fuel pressure is at 35psi via Schrader valve on the fuel rail.

I am wondering if it could be the electric fuel pump inside the FCC? how do I test this to see if it is working properly? I hear the pump kick on when I turn the key to on position.

All of the injectors are clicking.

New spark plugs.

I feel like this is a Fuel issue due to the way it just cuts power for a second and returns.

Here is the pump inside the FCC I think could be the problem.
IMG_8456.jpg

Help Please