420A Spark Plugs for Turbo 420A [Merged 12-28-2021]

[playboii]

Alright so I been spending hella money on these spark plugs and been doing a lot of reserch on them and can't find the right answer I been through 4 different types and 2 repeats now all gaped to .28 like I seen is needed along with new wires. But for some reason I keep going thru all of them sadly and it's driving me crazy it seems like it has a really bad miss fire and shows it's running very lean no matter what fuel psi I have it set at and now it won't run it will fire up but die and if I have it WOT it won't start at all but if I start it and give it has at the same time it still won't stay running not sure what it is I can't figure it out at all...... So what is the problem here and what spark plugs should I get

98 420A turbo 18 lbs of boost .60 turbo bout 550 injectors

 

[Inkdlyfe]

Alright so I been going through a lot of spark plugs trying to figure out what is the best to use and sadly I have yet to figure out what is the best to use. What is the best spark plug to use on a turboed 420A? Bout 18 lbs of boost .60mm turbo. 550 injectors normally set at 38psi fuel at WOT 34psi idle. Can someone tell me what sparks I should run with please. Car will start but die right away won't idle at all shoot to 2000rpms and die right away even if given gas ALL new sensors new wires too...

 

[dustyboner]

I always ran ngk bkr7e (bkr7e-11) gapped at .032-.030. Have you checked that your getting a good spark? Have you checked your compression, checked for vacuum leaks, checked fuel injectors? Are you using a fmu/sfmu? what kinda plugs have you been using?