OK so I took my truck out I've been putting this thing back together & driving down the road it feels like lose of fuel it stumbles every once in awhile.Started today when I pulled out of driveway it died. Changed online fuel filter@ my fass hpfp.I need to change the main fuel filter.I started it& it went rum rum rum then was fine.So should I look fuel filter or start worrying about vp44 or injectors? NO cel