Stu, I had to pull my intake manifold a SECOND time because it appears I had a faulty coil pack on my #1 cylinder.
The first time I changed the spark plugs, the entire process took me about 4 hours because I had to learn on the job, so to speak. The second time, I knew what I was doing, I completed the entire job in 2 hours, 15 minutes.
It isn't the most enjoyable task but it sure felt good to do one of the most dreaded maintenance tasks without having to pay my mechanic a small fortune. Again, Stu, a HUGE thank-you for taking the time to help the rest of us.