How I have to calibrate the spark plugs for a ford

Did you gap the spark plugs? Make sure that all the wires got put on the right plugs.

Use a scanner so you can see which cylinders are miss firing.. Could be codes 300 301 302 303 ect. showing which ones are bad.

.054 inch.

.034 gap.
Different spark plug manufacturers may have different spark plug specs?

Ck timing

1-4-2-5-3-6

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your wires are not in right order ....trust me ....drive safe

Reset the ignition timing, to the manufacturers specifications.
Remember the gap for spark plug must be according with the manufactureer speci. Otherwise you must have the same problem

God bless you

Fig. Fig. 191: Calibration 7-21C-R5-8-302 Mustang 1988 California

Fig. Fig. 192: Calibration 7-21C-R5-8-302 Mustang 1988

check to see if you put the right spark plugs in the engine (heat range ect) and make sure the spark plug wire boots are seated all the way

HI, i have the samme problemeon my mustang gt 2006
idid hevriting ,plug chek wires , and the probleme was the valve was sticking on the guide ,we change the head , and now it is very jood, good luck
it was misfiring whit no code