flembo
Well-known Member
There was a discussion about the Ford 5.4 L. engine and spark plug problems a short while ago on this sight I believe. Last week the check engine light came on and no power in our 05 expedition. This is one of the spark plugs that came out, the electrode came loose. This is the third time we have had coil and spark plug problems with this car and now on the 4th. set of plugs with 137K. I don't even want to get into the discussions I have had with the dealer. If you have this engine you should read the tech. service bulletin 06-15-2 I found it to be a scary read. The first 2 pictures show the electrode right side up then upside down. I am at least thankful that all the plugs came out in 1 piece and not as described in the TSB.