first two days ran great crunk on fist try third day would bog down on full throttle wouldent go over 8 mph and had trouble starting had some bad gas replaced it cheked the filter spark plugs fuel rail did have air in the bottom valve on the fuel rail yesterday got it to crank on full thottle several times and stayed running now wont crank we put high test in it still wont stay running runs for about on second could this be the high pressure fuel pump or would it not have crunk in full thottle if that was it any advise would help its an 06
its fuel injected thanks though we are so lost