Help!!! won't start....Mechanic please!

If it's popping then you have the timing off. Maybe it's just the distributor. Roll it around so the balancer is at TDC. Make a mental note of where #1 is and pop your cap. The rotor should either point at #1 or be 180 out. Anywhere else you know it's messed up, so you'll have to move the drive gear.