If the fuel tank gets a high vacuum even a electric pump will not be able able to pump. Easy test,temporarily remove fuel cap after stall,was there a vacuum on tank
sound of air rushing in. Check venting system of fuel tank.
If the fuel tank gets a high vacuum even a electric pump will not be able able to pump. Easy test,temporarily remove fuel cap after stall,was there a vacuum on tank
sound of air rushing in. Check venting system of fuel tank.