I have a Honda Ascot 2000 cc (5 cylinder). When I try and start it the engine fires into life and immediately dies. I have to turn the key again and it does the same thing. When the engine dies there are no dashboard lights showing. Sometimes the engine carries on running after I have turned the key several times. Other times the engine just dies whilst it is beain driven. Can you point me in the right direction in what is wrong?

Thanks