I recently rebuilt my 302 in my 91 lx. 2 days ago I went to start it for the first time since the rebuild and the car will crank and crank, but will not start. I know I am getting air and fuel, but no spark. I pulled a plug and had my dad watch while I cranked the engine. There was no spark the whole time I was cranking, but as soon as I stopped cranking I got one solid spark between the plug and the engine block, and motor actually tried to start for a quick second. I tried again and the...

1991 lx no spark while cranking but has spark once I let off the key