For years my Firebird has been plagued with bad running, so I have not used it as much as I would like. The problems I had were this metallic clatter from the engine as I was accelerating uphill, didn’t know what it was. Then one day I noticed that the light were working intermittently. I remembered that years ago when I got my Firebird there was a spare ignition swith. I promptly changed it and now the bike goes great.