My exhaust is backfiring on slow down from speed in 4th and when I change down into third or second. Has a single barrel Weber carb.
Replaced the manifold and inlet/manifold gaskets a couple of weeks ago and it seems tight (it was leaking previously), and backfiring then. I think the mixture is OK...., and I can't see any cracks in the exhaust manifold - can anyone suggest a likely cause? I would like to avoid pulling that manifold again... many thanks.