Ford Repair: 01 Windstar Misfire, vacuum leaks, vacuum problem

Question
I have an 01 Winstar I know and the beginning problem was: my wife was driving home about 2 weeks ago and started up a hill and the van started running rough the farther she drove home it got a little worse and the check engine light (which normally stays on) started blinking. She brought it home and i started checking into it and the blinking means a miss. So, the handy man I think I am knew this could be a vacuum problem and have had to take the uppe intake apart and clean before decided it was time to replace the gaskets all 7 and the isolator bolts. So, I did this and put it all back and it seemed to run a little better at first added fuel treatment thinking it was the gas possibly and this lasted about a day. Well we had to take it off the road not safe for her to drive and didn't want to mess it up any more than I had. Went back in and checked the hoses and replaced plugs and wires and put it all back together and is running worse than before. I took it to a mech. right up the street and he told me he didnt want to work on it because there is no telling what I had f***ed up in there and it would cost too much to chase. I am at my wits end and need some help and by the way one of the bolts on the back of the plenum broke off and I don't know if this would make it that much worse or not. Hope tightening all the bolts too much wouldn't cause it either. Please someone help.

Answer
Hey there, you will have to have that bolt extracted to prevent any vacuum leaks from gettting worse. but from what you have described to me this sounds like a typical windstar problem. Remove the coil pack on the back off the engine. Inpect is for minor cracks, if there is a crack it will usualy be a small crack with rust coming out, if one is present then replace the coil pack wires and if you havnt replaced plugs do those as well. let me know what happens
good luck
Chris P