I’ll go out on the branch…
After reading his posts, I’m guessing he has two problems.
The obvious pet cock, reserve only functioning.
But with a clean instantaneous all four cylinder cut off it’s an electrical gremlin at work…
Other than a full instant on choke situation, I’ve never had an engine not display some type of carburetor mixture problem before instantly dropping all cylinders simultaneously. At least a burble or a hesitation before nothing on all cylinders. On my old 76f even forgetting to turn the gas on will result in a cylinder or 2 to start acting up due to low float bowl level prior to lights out on all cylinders…? I just can’t picture all four carbs fuel bowls all running out of fuel at the exact same time..especially if it been on its kick stand for any period of timd….If so, I want that guy to set my floats for me…😁
