Quote from: Chevy1500z71 on June 13, 2010, 01:00:40 AM
you could pick up a used head on car-parts.com for cheap but youl still need to pay labor or do the job. im no ford guy but this seems to be a somewhat common problem, it seems plenty of people try the repair kit with success. its only around 250 bucks, thats worth a shot to save 3,000 bucks if you ask me. i really dont see any other options, epoxy a spark plug in and drive it strait to the dealership for trade in lol.
As far as a common problem, a spark plug that blows out of the head is usually a result from an improperly torqued spark plug. I've seen it on 4.2L, 4.6L, 5.4L and can usually be traced back to the customer that had a coil over tune or tune-up performed in the not to distant past done elsewhere. Engine vibration+compression+loose spark plug=bad day.
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