2011 Accent AT - Engine Knock!

[eido]

[ame=http://www.youtube.com/watch?v=WuCUGcqO5SE&feature=related]Detonation Knocking Pinging - What is it - YouTube[/ame]
learn why on some vehicles after update knocking is solved but low power is experienced

[WalterBishop]

This is very enlightening....thanks for sharing. for those M/T owners na nag update to euro 2, kamusta na? happy and satisfied na ba kayo sa performance, meron pa ba kayong naririnig na metalic sound as mentioned here in video during shifting? i'm using shell unleade d since my ecu was updated to euro 2, okay na performance ng kotse ko pero meron pa din akong naririnig minsan na metalic sound, very short sound, during shifting....parang piston.

[Retz]

Detonation Knocking Pinging - What is it - YouTube
learn why on some vehicles after update knocking is solved but low power is experienced

very informative sir.

[SierraMadreMe]

My apologies,but I do not speak the language.Might I ask for any responses to be in English please?Is the Accent still having this knocking problem,or has it been resolved with no loss of power?My opinion is that if the fix for the problem results in engine power loss,then it is not a fix,it is a bandaid.

I have been strongly considering purchasing an Accent.It is a nicer looking car (in my opinion) and has good value for my money,but if this is still an ongoing problem,then is does not speak well of Hyundai's ability to solve problems with their cars with customer satisfaction as their main objective.

Advice or first hand experience is certainly welcome.

Thanks.

[CVT]

Where do you live?

You might not have the petrol issue that we have here... It's a big factor...

16.1K:nerves:

[makro]

My unit is doin ok after the ecu 2 , no loss of power naman so far after the update 3 weeks ago. im fueling gold and v power since mababa naman ang gas ngayon.

[CVT]

My unit is doin ok after the ecu 2 , no loss of power naman so far after the update 3 weeks ago. im fueling gold and v power since mababa naman ang gas ngayon.

Good for now bro. But, defeats the purpose of an econocar.....

16.1K:nerves:

[SierraMadreMe]

I'm in the PI.I do understand that the fuels are less than optimum,but a car manufacturer should be aware of,and adjust for, the market that they are selling in.I am not a fan of the notion that you have to seek out the higher octane (and more expensive fuels)like you mentioned in your post above CVT.

I have not read any reports of the other manufacturers cars having any problems.

My purpose for posting is simply to find out whether or not the issue has been resolved with no performance compromise.(loss of power).I appreciate makro trying to help,but in my opinion,telling your customers that they must use premium fuel in a 1.4L,doesn't seem like the way to correct a problem.It is a cheap way to fix it (for the manufacturer) but not so much for the customer who pays higher fuel costs because the manufacturer couldn't,or wouldn't fix the problem correctly.

Anyone else care to share their experience or insight?

[Retz]

^

I think the issue has been resolved by HARI. Well, as of this time.

[niky]

I'm in the PI.I do understand that the fuels are less than optimum,but a car manufacturer should be aware of,and adjust for, the market that they are selling in.I am not a fan of the notion that you have to seek out the higher octane (and more expensive fuels)like you mentioned in your post above CVT.

I have not read any reports of the other manufacturers cars having any problems.

My purpose for posting is simply to find out whether or not the issue has been resolved with no performance compromise.(loss of power).I appreciate makro trying to help,but in my opinion,telling your customers that they must use premium fuel in a 1.4L,doesn't seem like the way to correct a problem.It is a cheap way to fix it (for the manufacturer) but not so much for the customer who pays higher fuel costs because the manufacturer couldn't,or wouldn't fix the problem correctly.

Anyone else care to share their experience or insight?

The other people having the problems are not they type to post on the net as much. I've heard of numerous problems with regards to fuel quality for both diesel and gasoline engines. For most, it is simply a loss of power, for others, you get knocking.

I've heard from one overseas fuel specialist that Hyundai's ECUs don't adjust well to poor fuel quality. And that's what the problem boils down to, basically... the mix varies from station to station and brand to brand. Two fuels marked 93 RON (research octane number) will often not have the same MON (motor octane number). Now RON is a measure of how easily a fuel "knocks"... but MON is more important to some people, because it shows how easily a fuel knocks under load... which better represents real world conditions.

Then add the problem of ethanol mix, water and poor station maintenance, and sometiems even the RON won't match what is marked on the pumps.

Thus: If your car is sensitive. Stick to a known, trusted fuel brand, and fill up only from a single station (in good repair), so if anything goes wrong, you know who to blame.

[maxhedrum]

based on this forum, the only people who have gotten loss of power are those who upgraded to the 1st firmware. Bratski/mexo/jayd are the ones I know who experienced this. Their units got fixed by ECU replacement then updated to Euro 2.

Mine was updated from factory to Euro 2. No loss of power running on shell unleaded. I have not heard of anyone here who from factory to Euro2 has experienced loss of power.

I'm in the PI.I do understand that the fuels are less than optimum,but a car manufacturer should be aware of,and adjust for, the market that they are selling in.I am not a fan of the notion that you have to seek out the higher octane (and more expensive fuels)like you mentioned in your post above CVT.

I have not read any reports of the other manufacturers cars having any problems.

My purpose for posting is simply to find out whether or not the issue has been resolved with no performance compromise.(loss of power).I appreciate makro trying to help,but in my opinion,telling your customers that they must use premium fuel in a 1.4L,doesn't seem like the way to correct a problem.It is a cheap way to fix it (for the manufacturer) but not so much for the customer who pays higher fuel costs because the manufacturer couldn't,or wouldn't fix the problem correctly.

Anyone else care to share their experience or insight?

[atmarcella]

have you guys tried switching to a colder spark plug?

[makro]

The other people having the problems are not they type to post on the net as much. I've heard of numerous problems with regards to fuel quality for both diesel and gasoline engines. For most, it is simply a loss of power, for others, you get knocking.

I've heard from one overseas fuel specialist that Hyundai's ECUs don't adjust well to poor fuel quality. And that's what the problem boils down to, basically... the mix varies from station to station and brand to brand. Two fuels marked 93 RON (research octane number) will often not have the same MON (motor octane number). Now RON is a measure of how easily a fuel "knocks"... but MON is more important to some people, because it shows how easily a fuel knocks under load... which better represents real world conditions.

Then add the problem of ethanol mix, water and poor station maintenance, and sometiems even the RON won't match what is marked on the pumps.

Thus: If your car is sensitive. Stick to a known, trusted fuel brand, and fill up only from a single station (in good repair), so if anything goes wrong, you know who to blame.

I think i heard here that accent are direct imports from korea and the engine is basically configured on korean condition (fuel mix,etc). I maybe wrong but i think we have no choice but to adapt the higher octane in this case?

[andro0120]

have you guys tried switching to a colder spark plug?

This was something that I was willing to experiment on. Unfortunately, when I had the oppurtunity to check, the Accent's plugs are NGK LKR6B-11E. A model that is not exactly available in most stores - plus the heat range is already "6". I doubt if we will find a "7" anytime soon.

[Retz]

Btw, what is the minimum RON requirement for the Accent?

[andro0120]

Our manual says 93 RON for countries outside Europe

[Retz]

Our manual says 93 RON for countries outside Europe

okay, xtra or fuel save would suffice the minimum RON requirements then.

[Starex_Gold]

okay, xtra or fuel save would suffice the minimum RON requirements then.

Ang problema kumakatok nga eh

[valacirca]

Hi guys, I got pointed to this thread by a friend because I was planning on buying a brand new latest-model Accent.

I started reading the first few pages... then the last few pages... but I really don't have the time to read all 166 pages of the thread just to see what conclusion you guys reached. If you don't mind, maybe I just ask kung ano na ang naging resulta nung discussion about the Accent engine knock?

What's the cause? What's the solution? Are all models affected? Is it a critical problem? What things should I check especially when I purchase an Accent? Is the latest model Accent still a good buy?

I really like the Accent over the other cars I'm considering, but this issue worries me about the Accent's reliability.

[CVT]

Ang problema kumakatok nga eh

Bro.,- akala ko, sasahihin mo, "Basa!...."...

16.1K:nerves: