The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

burnin oil · 08-09-2022, 04:53 PM

You are right but possibly a little rich under most conditions. Probably caused by timing.

My point on the varying AFR was that the computer constantly goes rich lean to find perfect burn. It's rich as much is it is lean, constantly. Cruise at low throttle should probably be around 15:1. Rich is more combo dependant. You are on the right track.

I reread that and I think a AVS is a carter carb. I don't know the circuits on those specifically even though i do have one. Used carb that I swapped on but broke a flywheel starter ring just afterwards so very little time playing with it.

08-09-2022, 04:53 PM	#14
burnin oil Registered User Join Date: Jan 2013 Location: Eastern TN Posts: 1,921	Re: My tuning skills have hit a wall. You are right but possibly a little rich under most conditions. Probably caused by timing. My point on the varying AFR was that the computer constantly goes rich lean to find perfect burn. It's rich as much is it is lean, constantly. Cruise at low throttle should probably be around 15:1. Rich is more combo dependant. You are on the right track. I reread that and I think a AVS is a carter carb. I don't know the circuits on those specifically even though i do have one. Used carb that I swapped on but broke a flywheel starter ring just afterwards so very little time playing with it.