Lean idle. Rich cruise.

Here's my results, so far. Starting with brand new plugs.

Blocked "2 and #5 just in the primary block. Pretty big change. Friday was 82*, 60% RH, and it was damn near PERFECT. Idling at 13.5, cruising at anywhere between 2400 and 3200 right around 14 ish. WOT I think a little lean at 13.4 to 14. This was WOT in 1st and 2nd gear. Could not get to the spot to really wring it out. Plugs looked new, so maybe a wee bit lean?

Now Saturday, 90* Very high RH, and everywhere except WOT a bit rich. Nowhere near as bad as it was, but a couple plugs, #6 and #8 a bit dark. That's the side my AFR is on.

So you guys definitely got me on to something! So thanks for all the info. Not even going out today. It's blistering out there and soupy air.

Soooooo next maybe leave it alone, or try blocking the #1 bleed also.... Or just blocking 2 and 5 on the secondary block. These bleeds are definitely very receptive to change. Obviously. I'm so tired of draining fuel bowls it's getting monotonous.

Talked to my dyno guy and he suggested a Super Sucker spacer. I only have 3/8 inch to spare underhood, but it's something to ponder...............


as a side note, my nephew says he isn't thrilled about recording my wideband gauge once I can get back to our spot. Says I scared the **** out of him.
It's weird how we get used to these things, and it feels like no big deal. Throw a newbie in the passenger seat, dump it off the 2 step at 3500, run it out to 5800 or so in 4th gear then ask THEM how it felt.
:eek: