does any one know if there is any thing special to do when timing a stock m715 engine . and also what is the timing for it ??? where is the timing mark on the front of the engine . I need to know because my truck will idle just fine but when I give it fuel it dies or misses really bad . i put a new carb on it not rebuilt and its the correct one . and new plugs and wires and points . also a new fuel filter does anyone have any ideals why it wont take fuel ?? does anyone know of a good aftermarket plug not the oem kind but regular plug type that would be a good choice ???