Originally Posted by ragguy
I'm new in here I have an 87chevy 305 lost spark changed coil have power in n out but no spark from coil. Now what
Replace the module w/a known good one if you have one around. The other thing in the distributor that can cause a no start condition is if the pick up coil has gone bad or has a broken lead going to the module. This isn't as common as a bad module, though.