screw bolt #6 coil broke off and now broken intake
My 1998 Ford Expedition 5.4L Eddie Bauer SUV started misfiring. A few years back it had same problem and since had only replaced faulty ignition coils # 1 and 4 (passenger side). This time around I decided to buy all 8 "IGNITION COIL ON PLUGS" and all 8 "MOTORCRAFT SPARK PLUGS". As always, the most difficult side to do is the passenger side, coils 1 thru 4. After removing the air filter assembly, disconnecting a few hoses and lifting with a rope the ones I could not disconnect, followed by removing the two screws of the fuel line and lifting it out as high as possible with a rope line, I was ready to start. Removed and replaced all coil on plugs and spark plugs with no problems. Successfully put everything back together. Then went on to the driver's side to do the same on coils 5 (front) thru 8 (firewall). Cleared some hoses and did same with fuel rail. Coils 5, 7 and 8 came out without a hitch. Discovered that coil on plug # 6 was broken in two pieces. Was somewhat difficult to remove but finally did so. Inserted the remaining 4 spark plugs, then followed with inserting the "coil on plugs" to each. All screws tighten securely the coil plugs in place. However, coil on plug # 6 only went in partially in, leaving the coil on plug moving freely. MY grandson helped me through the process under my supervision of course as His smaller hands were better able to reach. I then jumped in to see what was the problem. I started tightening but the screw seemed to just spin until, SNAP! It broke off, leaving a stud out. I tried unscrewing it out with a vice-grip. Ended up just breaking the tip off. I then had to use my broken screw extractor kit but if failed. Drilled a hole in the center of the screw which finally went through it. I then used the extractor with no success. Decided to leave the extractor bit in place and try turning it with a vice-grip. Made it worst. The aluminum intake where screw goes into, broke off a piece. So now my only option is to just leave the coil in place dangling in place or buy a new intake. Gave up after 9 hours working on this. Tomorrow I'm going to attempt putting a screw through the coil on ignition with a washer and another washer in the bottom and tighten with a nut to see if I can tighten down the coil on plug. I'm crossing my fingers and hope it works.