redfishtd

It is an insulator not a conductive gel . Its purpose is to stop boot from heat seizing boot to porcelain . The other is to stop tracking and water from entering boot . A little is not going to hurt anything . Clean all cop connections with contact cleaner and clean any corrosion off high volts tab . Carbon in cyl tip area off plugs can break plug going in or out . use carb cleaner to get it to dissolve out of there like it was when it was new . Use rubber socket and start plugs by feel and fingers it should be easy to do if cleaned correctly . Anti seize is not recommended on plugs anymore, it can foul tip . It is highly conductive . Keep you hands clean ,porcelain clean use very little and only use nickel- its high temp . You can get it on amazon . Definitely no copper on alum heads . Torque 25 to 28 foot pounds. A little anti-seize on cop bolt okay in salt country these take a beating .
Any plug cop or injector should lock on replace if it doesn't or badly corroded . Usually soldering new one in is necessary .
Misfire raw data per cyl is recorded short of threshold in mode six of code reader . An android phone, 5$ torque pro app, a cheap amazon bluetooth reader , look under test results it will tell you raw counts needed to set cel and the raw number it has for each cyl . Its not perfect ,it uses crankshaft sensor to see boost each time that cyl comes up .

redfishtd

Accel coils have a terrible rep . Colorful but trouble . Its like fishing lures catch more fishermen than fish . Fish don't buy lures . Cop quality needs to be first class ,30,000 volts is no joke , special silicon steel cores etc, windings must not break down one turn to turn short will kill them .

TwanD78

ceasefire49

Bosch up grade upgrade.. Use the motorcraft cops there are some good deals on Ebay I have been using the champion 7989 plugs for 5 years now change them every 60K have had zero problem and they run fine contrary to popular belief. They have had no problems and I have had them on a machine at 50k.
I have 260K on engine now. Burns very little oil. Did the complete phaser,Timing,VCT,Lifters and oil pump (Melling same volume higher pressure) with new cam sensors and crank sensors 2 years ago. Engine has no noise and idols smooth as hell. Only use genuine ford parts for these builds. Tried to tell a friend about the pitfalls of using Dorman. Now after 3 Months he is doing the phasers again. I run mobile one 5 30 change with wix filters at 5 k. Yea I tried those accels wound up giving them away..Junk

TwanD78

redfishtd

Be more concerned about carbon around spark tip in cly , clean it out with carb cleaner . Carbon breaks plugs . I too use the 7989 plugs , they are the only double platinum plugs . I only run them 60k, been using them over ten years .