There is a little watery black tinged “splatter” on the ground from the passenger side tail pipe (no cross-over pipe) after 30 min of break in + 5 minutes idle for cool down. The kind of thing you would see from running rich. It never smelled rich though.
Anyway, I will get new plugs and see if this cleans up my idle. It’s just fine tuning at this point, but I hope to get it on the road soon so I can beat on it and break in the motor!
Eightlitermopar
I had tuned my old mag headed 318 with an LM-1 wide band 02, and even at fast idle (which measured about 14:1 AFR according to the WB 02), it would leave black soot on the snow....
glad to hear you're making good progress....
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
