just as the title say looks all most like sand in the top of the injector any one had this problem or know a calse and i have an injector cup stuck on one of them as well ugh

The LB7 line nut to line interface allows dirt, moisture and salt to accumulate and corrode them. When the line nut is spun off it grinds this junk up and it then washes down into the inlet bowl of the injector.

the feed lines and the injectors where done by gm aproxx 30,000 miles ago and it has new lines on them still think its that ? and i have an injector cup stuck on one of the injectors:mad: how do i get that off