The Original i30 Owners Club

GOT PROBLEMS OR ISSUES? => PETROL => Topic started by: kangeroo on September 01, 2019, 02:43:49

Title: car idling badly at startup
Post by: kangeroo on September 01, 2019, 02:43:49

When I first start my Hyundai i30 in the morning it idles rough for the first few seconds. After revving slightly it disappears and operates normally it is a2016 model only done 35000KHM 

Title: Re: car idling badly at startup
Post by: Dazzler on September 01, 2019, 04:27:37

Hi,

I moved this to Problems with Petrol Model. I had to search your previous posts to find out what you had. I would certainly help for future inquiries if you put put a bit more detail in your car description/signature.

Title: Re: car idling badly at startup
Post by: kangeroo on September 01, 2019, 05:20:21

sorry I am 70 don't
 no much about the engine size etc

Title: Re: car idling badly at startup
Post by: Dazzler on September 01, 2019, 07:09:19

Quote from: kangeroo on September 01, 2019, 05:20:21

sorry I am 70 don't
 no much about the engine size etc

No probs I'm guessing it is the 1.8 litre unless it is a 2016 SR which had a 2.0 litre motor.

Hopefully someone technical will be along shortly with some ideas.

One of our Tech heads is actually as old or older than you! @nzenigma  :whistler:

Title: Re: car idling badly at startup
Post by: nzenigma on September 01, 2019, 22:43:03

Great intro Dazz  :mrgreen: :rolleyes:

There are a number of things that come to mind.
These are trouble free cars so Im guessing maintenance issues.

If rough idle sounds like just one cylinder constantly  missing, you could have a lazy injector, or more likely poor spark plug. Among other things.

Rough idle in general could indicate an air leak, but my choice  as the most likely at 35,000km is a dirty MAF sensor. Can be cleaned with a spray cleaner.

Title: Re: car idling badly at startup
Post by: Dazzler on September 01, 2019, 23:15:42

No worries Gary.  :D

Thanks for your input. Much appreciated as usual.  :goodjob2: :goodjob: