Stylewizzard

I have a 84 W126 280SE, I had an attempted theft on the car, so had to change door handles and ignition unit. It all went well, she started, drove her t text and she was really sluggish. strange, I changed the idle speed a little and still sluggish. Got back from a test, had to finish of the doors with some cosmetic things, and now nothing. she has power, hear the fuel pump buzz, turn the key and she just wont turn over, checked fuel to distribution, there is, to one injector there is.
know what to I check?