93 ss 348 no.1 cylinder no spark

certainly! inside the coil pack,it is invidual circuitry,for each cylinder.

 

Double check the spark plug wire first.

 

Yup. I had the no 7 output on my coil go bad. Threw some wierd codes and was intermittent enough that several techs couldn't find it.

I have a cheap tester, can't remember exactly what it is, that will check spark at the plug end, but I was also able to use it at the coil.

 

if i understand, you swap coil and all ok? when you put them back, still cylinder one missing?

 

first, you check if you have fire with a spark tester( cheap and fast!), if no spark, you can swap coil from each bank of cylinder. if you still have no-spark on cylinder 1, you have to check the wire output from the computer, to know if it drive the ground to the coil pack.

if,when you change the coil,the problem of no-spark goes to the other bank of cylinder, for sure,the coil pack is bad.

 

The powermodule has a dwell function.
That means it regulates the current through the coil. The resistance of the coil is less than 1 Ohm so the current would get 12 Amps or more. Thats too high so the module keeps the current under control. The module therefore measaures the raise of current and eeeuh.. keeps or stops at say 4-6 amps... then the coil is satureted and its ready to fire at command of the ECU.

Lot of european cars have these modules and the specific module of the 348 is also in the Alfa 155 I thought. But all of the modules monitor the current and current rise time and so monitor the resistance of the coil!!
If the combination of coil and module is ok it fires... that means that a 0,9 Ohm coil can fire with module "a" but sometimes the resistance is to low for module "b" which doesnt fire... So measure the PRIMARY resistance of all your coils and compare them with each other. There may not be a bigger difference then 0,1 Ohm. The absolute value is less important due to inaccuraccy of your multimeter

I guess the primary resistance of coil of 1 (and 4?) is lower then 8 (and 5?)

I hope its clear with my bad english