i30 Owners Club

GOT PROBLEMS OR ISSUES? => DIESEL => Topic started by: Asterix on May 23, 2016, 21:20:56

Title: Knocking sound and cutouts when accelerating gently
Post by: Asterix on May 23, 2016, 21:20:56

Lately my 2008 CRDi have had a knocking sound from the engine when cold. It sounds like an injector isn't delivering/spraying correct.
Same time there's very small cutouts from the engine. Both only happens when accelerating very gently, there's nothing to hear or feel when engine is warm or when accelerating more than half throttle.

There have been little white smoke on startup when cold, so could be glow plugs, but last time 2 glow plugs died, there was no sound or cutouts, so I suspect injectors.

Is it possible with Hyundai's diagnostic tools to find out if all injectors are working OK.. :question:

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: Dazzler on May 23, 2016, 23:56:37

Hope it's minor Henning!  :fingers:

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: cruiserfied on May 24, 2016, 11:19:22

There is 3 tests available using the Hyundai scantool.
Compression test, idle speed comparison and injection quantity.
The injection quantity test will show if there is excessive adaption in any injectors.

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: Asterix on May 24, 2016, 11:30:59

Thanks Tim.
For some strange reason there wasn't anything this morning.

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: cruiserfied on May 24, 2016, 12:17:48

It caught on you were thinking about taking it to a dealer. I swear they know and behave themselves.

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: Asterix on May 24, 2016, 19:11:52

Quote from: cruiserfied on May 24, 2016, 12:17:48

It caught on you were thinking about taking it to a dealer. I swear they know and behave themselves.

In that case I'll just think about it every day...  :lol: :lol:

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: Asterix on May 28, 2016, 11:57:06

Quote from: Jordie on May 28, 2016, 09:00:39

Fault on the mechanical side wont show on diagnostics.

Recently had similar thing myself....knocking under light acceleration. See my post for video of noise.

Diagnosed by hyundai dealer as faulty injector(s). Awaiting estimate for repair at the minute

I have read your post thinking it could be similar issue, however my i30 haven't missed a beat since I posted, so maybe Tim's advise of just threatening with a dealer visit can cure it...  :mrgreen:

Title: Re: Knocking sound and cutouts when accelerating gently
Post by: Keany on June 14, 2016, 14:02:11

Hello,

have you got any video record of sound?

I have maybe similar problem on i30 2013 1.6Crdi 81kW