Minor misfire

[Lowndex]

I've had this happen, took it to the dealer for diagnostic. They told me which cylinder and I changed the coil myself. Fixed it. Quicker and cheaper that trial and error. Or you could just replace all 8, which will cost more than the diagnostic. Until it throws a code, handheld scan tool won't tell you which cylinder is intermittently missing.

Thank you, FordNut. This just happened to me. A handheld scanner detected intermittent misfire/code for three cylinders on the right side. I am pulling all eight plugs to send pics and the to Marty and Jeff (MOs Speed Shop). I will replace the NGT 4177 plugs (gapped at 0.027). If problem persists, I will do what Marty/Jeff states next.

I need to find a good Ford engine mechanic without using my judgement what 'good' is. I do not want to repeat my mistakes of the past.