Right guys, thanks for the replys. I bought the engine ,ignition and plane off a friend before he emigrated. Im not sure which ignitionit is but im using the same gear he used which worked ok for him. I think its the icu-l . Is there any way of telling which it is? Im not sure about the battery test jumper. where would it be and should it be on or not? As you can tell, this is my first petrol engine so i aprreciate the help.</p>