rough idle

  1. G

    All Small Six 1966 ford 200 Backfires on Downshift and Running Rich (?)

    I've been putting some good miles on my 1966 200cid Mustang this summer and it's been a lot of fun. Carb was rebuilt (Carter YFA) along with some other tune-ups in the spring and it's been running smoothly and reliably. Recently though I've been getting backfires while downshifting (3 speed...
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