Thanks for the reply. I have tried all the above. I checked fuel pump and all sources of vacuum leaks. I checked timing and mechanical and vac advance. All seemed to be working.
I reinstalled the original carb and returned to the original problem of intake backfire when cold.
The original carb...
I recently purchased a 1977 CJ 5 with a blown engine. I rebuilt engine.
The engine was already removed so I,m not sure if anything is missing. but to my problem. The fuel lines where plugged when I first tried to start engine. I removed tank cleaned and rodded out fuel lines. I replaced filter...