So I was having trouble with my Model T running like it had a bad case of the flu.
The culprit? This little guy… the Carburetor Spray Needle – had the tiniest burr on the tip, just enough to upset the flow and cause the engine to run rough.
I carefully removed the burr and reinstalled the needle, and viola! The engine now runs like a champ! 🙂
New South Wales, Australia