This is actually third EJ I have got now, but only one running as it is a complete unadulterated car and not just a donk

Came with a bonus miss

#2 plug is black, all others pristine porcelain

200-205 psi in all four

HEI plug tester shows spark bug with some delay .?

Tried two dmm on 20k scale and got no change to the 1 on screen. 

But same on #4 lead !

Being new school is there a different method and resultant reading for these original genuine e leads? 

Any helpappreciated. Meanwhile might try one new spark plug just in case

No one knows?

I used some fuel cleaner and just let it work its magic as it idled and revved on the spot through the day. Gave it one new plug just in case. Much better, but problem still there occasionally. Engine is now out for storage. Car to be parted out