Could be that his carb is running way too rich on one side and the other is lean or normal. The idle circuit could be fine or not (depending on idle) and the secondaries could be real fat on one side.
Primary circuit feeds both sides fine. On hard acceleration, one side is so fat or gaskets dried where vacuum or a hard part is not seated properly or is missing. If only one side of the secondary is "good" and the other dumping fuel, it would only foul one side of the motor, either even or odd plugs because the intake is divided in half..if stock. Correct?
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
