NGK BR6's & miss fire

[o2camaross]

Well I just put a set of br7ef's in mine and arounD 1200-1700 rpm with hardly any throttle min will miss a little. Once it hits 2000 it stops and no problems under throttle

[EmmerichLSx]

I put a bottle of heet in the tank and threw some other plug wires I had layin around on it and it seems to be doing ok now.

[ducky]

I had that when I had my plugs gapped too big. I regapped them a bit tighter and downlow it cleared up that stutter sound

[oleshifty]

what did you have them gapped at? I'm with ducky on this one. The 'original' gap recommended for our trucks was for a platinum/iridium plug. When going to a copper plug, you typically have to close the gap down. I run around .035 on mine, and they seem to be pretty good. I'm running nitrous over boost, but should be close to the same gap (I would think)

[EmmerichLSx]

These plugs come gapped @ .026 so I left em. I was told to run .025-.028 for boost.

[oleshifty]

wow...br's are THAT much closer then the Ts? No clue then. I wouldn't go any closer then that lol

[EmmerichLSx]

Lol yeah. I'm wondering if it needs the crank re-learn procedure. But there's no codes.