the car has the original ford 170 inline 6 with a freshly rebuilt autolite 1100 carb on it. it has no problems idling or moving, but when i shake the car the engine stumbles. i got a video of it earlier but ill get a better one tomorrow.
Float level in the carburetor is too low? Loose coil wire? Short in the ignition to coil primary wire? (I might stumble if you pushed me from side to side.)
Reminds me of that joke where the guy says "Dr, it hurts when i do this" and the Doc says 'then don't do that".