The i30 Owners Club

2021 i30 N-Line -Rough Idle, Choking upon cold start, Black smoke fluttering out

NON092 · 2 · 1014

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Offline NON092

  • 1st Gear
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    • Posts: 1

    • au Australia
      Australia, Brisbane
Hey All,

Recently purchased an ex demo 2021 I30 N-Line (140kms on the clock) from a local Hyundai Dealership in Brisbane.
When first purchased it started fine and with no issues.
Now fast forward to now with around 3,500kms on the clock i'm having some real issues with the cold starting of the car.
Ie
- Rough idle
- Choking almost similar to when you start a lawn mower
- Black flutters of smoke popping out upon each choke.

Now from my personal experience, i've never had a car do this at all, especially a brand new car with such little kms on the clock.

The technician at the dealership stated that this is a normal sound and that there's no issues at all. "That's just how it is". Which concerns me. While it seems to even out after 2 to 3 minutes, i still believe a brand new car should start with ease.

What i'm seeing online is something to do with factory coils/plugs being blocked up causing this. other things i've seen is an ecu update due to incorrect readings of air-fuel ratio etc upon start up.

Just curious to know if this is just me or whether this is an issue that's more commonly wide spread.
Any help or advice would be greatly appreciated.

Dean!
  • 2021, PD, 5 Door Hatch, Petrol 1.6LT, Manual, White


Offline Lorian

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    • Posts: 3,426

    • gb United Kingdom
      Midlands

  • Midlands, UK N-Line T-GDi

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