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George H.
George H., Hyundai Technician
Category: Hyundai
Satisfied Customers: 2091
Experience:  Hyundai Gold certified, ASE Master tech 15+ years
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This only happens after overnight rains, Car hesitates on

Customer Question

This only happens after overnight rains, Car hesitates on starts, rough idle louse power tries to stall going down road. Check engine light flashes off and on. After car warms up it runs fine.
Submitted: 1 year ago.
Category: Hyundai
Expert:  Ted G. replied 1 year ago.

Your engine uses a combination of coils on the plugs and 3 spark plug wires. The symptoms you describe are normally caused by bad plug wires. I would replace those first and if it continues then replace the boots for the coils (between the coil and plug). When the insulation gets older it will cause arcing when the moisture is present.