Misfiring cylinder
2014 Hyundai Sonata: misfire or rough idle
5 of the 750 complaints about the 2014 Hyundai Sonata describe misfire or rough idle.
- owner complaints
- 5
- of this car's complaints
- 1%
- recalls
- 2
Is there a fix? There are 2 recalls and 42 service bulletins for this area of the car. See below
Misfire or rough idle by model year
What owners say
Check engine light came on with a odb code of P0300. engine started to run rough and mileage dropped substantially. Upon arrival to my home due to safety issues I turned off car and and let it cool. My father read the odb with a code reader and said it smells like gas but we will look at in the daylight. Today upon removing the engine cover and checking the spark plugs we discover stains and residual stains on the ignition coil packs and directly under the low pressure fuel line where it connects to the high pressure fuel pump. it seems the plastic clip/connector is leaking at anout the rate of one substantial drop per 3-5 minute period. this could cause an out of control engine fire. Dealer was contacted and while there are two recalls regarding other 2014 hyndai sonatas for the same exact problem that this vin was not covered by the recall and the repair cost would be 300 for the fuel line plus labor.
Extremely rough idle when stopped. Trying to accelerate to merge into traffic the my. Car had no power and I almost got creamed ! I had to pull over so other cars could go around me. Several other issues with car like oil every month or so. I had gas pouring from a hose on my engine and when I brought it to dealership they wanted 1100.00 knowing it was a recall. I hope the dealership and Hyundai rot. !
Unknown: experiencing a gas leak smell when the vehicle is in idle mode. Unknown: experiencing rough idle coming from the engine that's intermittent.
My vehicle has approx. 84000 miles, has routine maintenance. Recently upon acceleration, white smoke expels from the exhaust. The engine runs hot and burns oil at an excessive rate. Having to add at least 2 quarts every 2-3 weeks. While driving, the check engine light came on, took car to mechanic immediately who then explained there was so much sludge on the plugs (causing misfires and engine light to come on) from built up oil that all needed to be replaced. After replacing the plugs and oil change, white smoke continues to expell from exhaust. Mechanic advised the engine will not last much longer and will need to be replaced/rebuilt.
Service bulletins that may apply
- Higher-than-expected engine oil consumption
- Higher-than-expected engine oil consumption
- This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- Follow the guidelines outlined in
- Check Engine warning lamp illuminated with DTC P1326 and/or engine may exhibit abnormal noise or no...
- Applicable vehicles with 2.0L T-GDI and 2.4L GDI engines may experience the Check Engine warning lamp...
- The warranty coverage for engine long block repair or replacement regarding engine damage or malfunction...
- The warranty coverage for engine long block repair or replacement regarding engine damage or malfunction...
Related recalls
Engine
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2011-2014 Sonata and 2013-2014 Santa Fe Sport vehicles previously repaired under recall numbers 15V‑568 and 17V‑226. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned, or improperly torqued during the engine replacement procedure, allowing fuel to leak from the pipe.
- Risk
- A fuel leak in the presence of an ignition source can increase the risk of a fire.
- Remedy
- Hyundai will notify owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began March 1, 2019. Owners may contact Hyundai customer service at 1‑855‑371‑9460. Hyundai's recall number for this recall is 180.
Recall number 18V934000 · Recall details
Engine and engine cooling: engine
- What is wrong
- Hyundai Motor America (Hyundai) is recalling certain 2013-2014 Sonata and Santa Fe Sport vehicles. Machining errors during the engine manufacturing process may cause premature bearing wear within the engine.
- Risk
- Bearing wear may result in the engine seizing, increasing the risk of a crash.
- Remedy
- Hyundai will notify owners, and dealers will inspect the engine, replacing the engine short block, as necessary, free of charge. The recall began June 2017. Owners may contact Hyundai customer service at 1‑800‑633‑5151. Hyundai's number for this recall is 162.
Recall number 17V226000 · Recall details
Questions about the 2014 Hyundai Sonata misfire
Is misfire or rough idle a common problem on the 2014 Hyundai Sonata?
5 of 750 owner complaints about the 2014 Hyundai Sonata (1%) mention misfire or rough idle. The model year with the most reports is 2016.
Is there a recall or service bulletin for this on the 2014 Hyundai Sonata?
There are 2 recalls and 42 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2014 Hyundai Sonata
Engine failure 97Check engine light 86Stalling 78Knocking 68Headlights 60Loss of power 42Fire or smoke 41Won't start 25Oil consumption 21Warning lights 17Hesitation 15Won't shift 14ABS 13Grinding brakes 11Fuel pump 11Fuel smell 10Airbag light 9Steering noise 9Brake failure 8Fuel leak 8Adaptive cruise 7Door locks 7Jerking 7Overheating 7Seat belt 7Pulling 7Sunroof shattered 7Steering lock-up 6No deployment 5Harsh shifting 5Tire blowout 5Transmission failure 5
VIN decoder
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