I need help figuring out what is going on with my engine it has spark has compression it does turn over and trys to start but doesnt but when im trying to start it, it does a loud tapping sound i have no clue what it is or what to do to solve the problem

ANY BODY GOT ANY IDEAS?

 

Are you getting Gas?

 

Could the tapping be the solenoid, aka not enough juice in the battery? Or does it come from the top/bottom end of the engine? Has it ever started since the tapping began?