[s-cars] Engine misses/runs rough

[Alvin Labonite]

So the the last month or so, the car has been missing on and off that when
it happens it runs on 4 cylinders and car limps. It seem to only last for a
minute or two before it runs fine again. The culprit points to coil 4 as it
does not make a change when injectors are pulled. I have newer OEM coils
that are about 45-50k miles. No signs of discoloration on any of them.
Spark plugs are newer also. Swapped POS and still pointing to coil/cylinder
4.. If a coil is bad, won't it show all the time?

-- 
*Alvin*