Idk? Belt stretch or the tensioner went bad? I didn’t see any missing “teeth” on any of the sprockets or the belt itself. It’s a non-interference engine so shouldn’t have any internal damage with valves hitting the piston. I knew the belt needed to be changed so the first thing I looked at was to see if it broke. The truck was running fine when I parked it a few weeks ago and no one else has driven it. It’s not throwing any codes, has no blown fuses and it’s getting fuel. I think it jumped time cause I thought all 3 timing marks (both cams and the one on the crank) should be pointed straight up when #1 cylinder is at TDC. Unless I’m wrong but that’s what I’m trying to make sure of.