Misfiring

2013 KIA RIO
50,000 MILES • 1.4L • 4 CYL • 2WD • AUTOMATIC
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RIKKETTY
  • MEMBER
  • 1 POST
Engine misfiring when cold.
May 4, 2018 at 6:17 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Mainly three things can cause a cold misfire. A vacuum leak.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

The engine needs a tune up.

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Or you have a engine coolant temperature sensor that is giving you problems.

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Please run down these guides and diagrams and report back.

Cheers, Ken
May 6, 2018 at 5:02 PM
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