Given you've checked the valves, dizzy and carbs ... Good fuel flow with the ignition ON and the line to the carbs in a cup?? If no... Vacuum in the fuel tank.? Blockage in fuel line? Fuel pump no toggling? Blocked fuel filter? -- Dave G. KK7SS '65 MK III Sprite in Richland, WA If I wake up in the morning, and I hurt, it means that I'm still alive !!