Once started it runs ok but bogs out at 300 rpm. Put a distributor in now no spark you have to start it by cranking and feathering the gas. Once started wont go over 300 rpm an bogs out like its missing. Replaced distributor yesterday now wont start at all like its not getting gas or spark. Had it put on a diagnostics machine it gave me the codes dtc 4, 8, and 9.