95 Z28 fuel issue (hydraulicing in cylinder)

I have a 95 camaro z28 with an LT1. It started getting difficult to start and making quite a few revolutions before firing. one day the engine seized and the starter basically exploded. I replaced the starter and went to crank it over and it seized. praying, I started pulling plugs to hopefully find a hydrauliced cylinder. sure enough, cylinder #8 was pressurized full of gas and hydrauliced. drained the oil (and gas in it ha ha) and replaced that fuel injector. drove it from reno to vegas ok. It ran rough and gets hard to start after sitting. IT DID IT again!!!! I am beginning to wonder if one or more injectors are not seating when off. computer problem? It runs really rich and won't pass emissions and idle rough. Also have to feather the gas a little to get a good take off sometimes.

is the ses (service engine soon) light on