I am trying to find my spare one. If we are talking about the same thing. You mean the Hall Effect disc that fits under the distributor cap? Correct?
Yes that is correct, however...
Normally a HEP issue will create a no start or a condition that affects all 4 cylinders, not just one cylinder.
Generally the only way a HEP would/could cause a one cylinder misfire would be if there was an issue with the shutter wheel in the distributor.
You had good/strong spark at 35 KV so I highly doubt you have a HEP issue.
You have to follow a logical diagnostic sequence in order to locate the problem creating the condition, it is not advised to jump around system/circuits.
This issue should not be that difficult to diagnose, basically having the correct tools and diagnostic sequence makes things easier.
This whole procedure of verifying the BASICS should not take any longer than 1-2 hours.
(Compression, Cylinder Leakdown, Cam Timing, Ignition System Capability/Functionality, Fuel Pressure, Injector Balance Test)
If diagnosing the BASIC systems does not uncover the issue then checking Exhaust Backpressure, Air Intake Restrictions, MAP/CTS/TPS Calibration, Controller Power Feeds and Grounds are next.
a)Able to produce maximum of 40 KV on all four cylinders. - OK
b)Spark Plug, swap to another cylinder and see if the issue follows?
(Will show if the spark plug is the culprit)
a)Fuel Pressure? NOT COMPLETED
(Will not affect only one cylinder but needs to be in specs)
b)Injector Pulse - OK
c)Injector Balance Test? NOT COMPLETED
(Will show if all injectors are flowing the same amount of fuel per injector pulse)
a)Compression - 100 PSI on All cylinders - OK
(Shows the engines ability to PRODUCE pressure)
b)Cylinder Leakdown Test? NOT COMPLETED
(Shows the engines ability to HOLD pressure)
(Will show leakage past a Head Gasket/Cylinder Head,Block Leak or Crack/Intake Valves/Exhaust Valves/Piston Rings)
c)Cam Timing - NOT COMPLETED
(Would normally affect all four cylinders but needs to be verified OK)
Once the Non-Completed Tests above are Performed, Then We Can Move On.
Have a GREAT Holiday!!!