Hang on, lets start with the simple stuff before we pull cams, and valves..........
Check the connections of both ends of both battery cables. Are they sound and free of corrosion? Is the starter connections clean too? Often times when we try to wake a truck from a long nap the battery cables are a mess. If they are, nothing will happen when you try and start the truck.
How fresh is the battery? is it fully charged?
