I do not a vehicle with spark plugs and I am a gear head of the 60's.
Can someone explain, briefly, why these plugs are such as issue? Corrosion? Access? Is this just Ford issue? What engine sizes does it affect?
In my day boys,(Yes, here it comes: another old timer story) it was not unusual for us gear heads to change plugs on a V-8 in 1/2 hour and do it every 15,000 miles. Of course, I understand that back then the engines had to have fresh plugs due to inefficiency of combustion when compared to modern engines.
