I just purchased a 1993 190e 2.3. Ran pretty good, but had slightly rough idle, so i removed iac valve and cleaned with wd-40 and blew out with air compressor. to remove the iac valve i had to remove a plug with 2 flat head screws on the back of the fuel distribution. Gas sprayed out of screw holes for it was under preasure. put back together, and she wont start. check to see if those two screws still had preasure and they do. stopped doing anything and now i'm on here looking for answers. probably going to be a sleepless night tonite. any suggestions would be greatly appriated.