It should be easy to check and see if you have this switch fitted, while using the throttle with the right foot, gently apply the brake with the left foot, the brake should override the throttle cutting off the fuel, when the brake is released the fuel will flow and the throttle work again.
Most cars have this feature (im sure my roadster, plus4 did this) my tin tops do.
Well I revved it in the garage with the brake on and the engine didn’t cut out?
