I did a lower manifold gasket replacement and now my car starts but won’t run, checked all my vacuum lines but so i think it’s maybe a spark plug coil but idk please help
Its best to proceed in reverse when tracking down a problem like this. Start where you stopped and work backwards. Maybe you forgot to plug something in?...Inspect what you did really close. Think about the tools in your hands and visualize what you were doing when using them. Treck back over your process.