Raw Fuel Out Exhaust

KP:

I read the whole thread, and until you mentioned #8 cylinder I thought this might be anything from a 3.5 hp Briggs & Stratton to a V10. I guess I can cross off the Briggs line, and all the 4's & 6's.

So seriously, what is the vehicle? Carb? EFI? Hilborn injected? Give us a clue.

Is the smoke from the tailpipe Black? Blue? White?

B.