Question about 2003 Kia Rio

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When pulling out from a stop, car hesitates. Seems worse when damp, A/C on, etc. I checked vacuum hoses, seem OK. Air filter seems fine. Engine has 85K and original plugs. Plugs are "covered up" or I would have changed them already. Any way to tell if it's vacuum, plugs, or something else? Thanks. Tim

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You may have some bad spark plug wires. Often moisture will make bad plug wires arc to ground, instead of fire the plug. I would also consider the fuel filter.

Posted on May 03, 2010


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