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exhaust fire

  1. V

    After fire/ flames out exhaust, black smoke... ?

    Hello, been on this forum taking some tips a couple of times, but am currently stumped by the above issue- so I thought I would join and ask for help... I have a 2004/5 tuonon fighter (cos I cant afford the factory yet). I believe I am running lean/rich, how to I tell which it is, and...