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hesitation

  1. Hesitation/miss/slip in 3rd/4th

    smart General Discussion
    Just recently did my own service on my 2009 Smart Brabus with 33,000 miles on it. New iridium plugs, oil change, changed to performance air filter. Immediately after, ran smoother than ever before. About a week later, I notice a "hesitation" or slip or a miss (not sure how else to explain)...
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