Help!! Car running rich/misfire/starting problem. It's a mystery

[Znick742]

That is practically a diagnostic for intake leaks. Have a shop run a smoke test to find them.

If it starts then dies, it means there's a vacuum leak? How would it run without a afm?

[dnguyen1963]

Without the afm, the DME uses the default value for Fuel/air ratio.

[Znick742]

Without the afm, the DME uses the default value for Fuel/air ratio.

Yeah I kind of thought it would do that but I wasnt sure if a system this old would. Hmm, I guess I have a leak somewhere cause it won't stay running with it unhooked.

[Znick742]

Updated post