2011 Accent AT - Engine Knock!

[bratski]

Next week kakabitan namin ng OEM fogs yung Accent niya. Pakinggan ko yung knocking sound. First car niya kasi yun, OC din talaga.

Pag naka-idle daw maingay. Di naman daw ganun ang sound nung bago pa. Tapos pag umaandar ng low revs, maingay din.

Thats weird, yung unit ko tahimik ang idle. Halos hindi nga malaman kung naka on or off ang engine. And tahimik din when accelerating. Except when knocking of course. Ngayon wala ng knocking sound, sobrang low power ang naging kapalit.

*retz
Hindi ganun kalakas ang tunog ng knocking. Pag naka on aircon and radio malamang hindi mo maririnig. Pag malakas na yung knocking sound its too late na. Overhaul time na yan.

[Starex_Gold]

At naalala ko pala bro bratski.

Inupdate nila Q. Ave yung ECU ng Accent niya nung 1000km PMS.

Mukhang doon nag umpisa yung knocking

[Mile2]

Mga sir makikisingit lang.

Does any of your dealer's service center tried opening the valve cover? I'm was thinking that one or two of the rocker arms got dislodge from the its pinned position. Newer engine cars like Toyota VVTi have shim less rocker arms. Ganyan din yung mga nakita kong VVTi na paulit-ulit sa casa na hindi nila maayos dahil puro reset ECU lang ang ginagawa. Same symptom of loss power and knocking. Mga bagong engine ngayon hindi na nakatuhog na parang barbecue ang mga rocker arms, nakaipit na lang sa overhead cam and push rods, kaya there's a possibilty na mawala sa position at mahulog lalo na kung lumuwag yung mga turnilyo ng overhead cam or mahina ang oil pressure for the push rods.

[bratski]

At naalala ko pala bro bratski.

Inupdate nila Q. Ave yung ECU ng Accent niya nung 1000km PMS.

Mukhang doon nag umpisa yung knocking

Bro SG, ang pagkakaalam ko pag inupdate mag lolowpower. Yung akin mula ng first update up to now wala ng knock, sobrang low power nga lang naging kapalit. More evident ang low power pag nattraffic. Ang hirap talaga paandarin.

[yapoy86]

baka masyado lang kayo na paranoid dyan sa knocking sound...wala ba knock sensor ang engine nyan?? kasi kung meron yung ang magsasabi na may knocking talaga...

hindi naman masisira ang engine sa knocking eh.. lalo na modern engines na mas matigas ang engine parts..

yung toyota vios ng kuya ko dati madidinig mo na may takitik din sa makina eh.. hindi naman nasira 120,000kms na natakbo nun 2010 model pa

[Retz]

baka masyado lang kayo na paranoid dyan sa knocking sound...wala ba knock sensor ang engine nyan?? kasi kung meron yung ang magsasabi na may knocking talaga...

hindi naman masisira ang engine sa knocking eh.. lalo na modern engines na mas matigas ang engine parts..

yung toyota vios ng kuya ko dati madidinig mo na may takitik din sa makina eh.. hindi naman nasira 120,000kms na natakbo nun 2010 model pa

langhiya, 120,000km na?? mula aparri hangan jolo.

[meikey]

baka masyado lang kayo na paranoid dyan sa knocking sound...wala ba knock sensor ang engine nyan?? kasi kung meron yung ang magsasabi na may knocking talaga...

hindi naman masisira ang engine sa knocking eh.. lalo na modern engines na mas matigas ang engine parts..

yung toyota vios ng kuya ko dati madidinig mo na may takitik din sa makina eh.. hindi naman nasira 120,000kms na natakbo nun 2010 model pa

I don't think walang knock sensors yong makina ng sasakyan. Lahat naman siguro na EFI engines meron. The problem is, we were not aware of the data log nong ECM mismo.

Since inaddress ito ni HARI, I assume that the datalog had confirmed it na nagknocknock nga ang engine.

[bratski]

baka masyado lang kayo na paranoid dyan sa knocking sound...wala ba knock sensor ang engine nyan?? kasi kung meron yung ang magsasabi na may knocking talaga...

hindi naman masisira ang engine sa knocking eh.. lalo na modern engines na mas matigas ang engine parts..

yung toyota vios ng kuya ko dati madidinig mo na may takitik din sa makina eh.. hindi naman nasira 120,000kms na natakbo nun 2010 model pa

Iba naman yata yung takitik sa engine knock, yung takitik tunog ng mga valves yun and its normal. Afaik kung hindi nakakasira ang engine knock walang magrereklamo. Ive read it numerous times before naakakasira ang knocking sa engine if left uncorrected. Kung ok lang talaga ito yung mga high performance cars pwede ng maglagay ng low octane gas and not worry about the long term damage.

[bratski]

The Causes of Internal Engine Knock, and How to Eliminate it. By Ray T. Bohacz

O ayan, cause and effect ng knocking

To quote a phrase "other than running your engine without oil, there is nothing you can do that is probably more detrimental than detonating it ". Kaya yung may mga knocking issues pa i suggest wait it out or go ahead and update at the expense of low power. Dahil masisira talaga engine ninyo

[nokianitrox]

Had free time to check this thread ulit and I got surprised with a lot of things that happened.

Anyway, I think its weird that my accent still does not exhibit this knocking or low power issues at metikuloso din ako (also my father) sa kotse. I guess I'm one of those blessed owner na nakakuha ng good batch from the Hyundai shipment . Mine is now running approximately 7500 KM, April batch so 10 months na ang unit ko, 1.4MT P. Black, being serviced at H. Balintawak, halo halo ang kinakarga ko dito to check kung ano magandang fuel & just had a full tank of sea oil's extreme 97 but I have not tried yet P. Blaze sa sobrang mahal na nun .

I even tried to use si accent to go home without aircon & radio na nakasara ang windows, and the only problem is tagaktak pawis ko pero wala talaga ang knocking sound.

Pero honestly, I'm quite disappointed sa HARI for not solving this now considering mag 1 year na ang model nila dito sa Phil. Nakakabwisit nga naman talaga kung kay bago bago ng kotse mo at may problema agad, buti sana kung ninakaw mo lang pambili nyan eh okay lang.

One more thing, regarding sa lifter/riser or kung ano man tawag nun eh I got worried with the post ni bro bratski so I had my suspension springs checked last week. So far ok naman ang spring tension nung unit ko and ang sabi is that no problem naman daw with that thing na nilagay. Yes medyo umangat ng bahagya yung likod ng accent ko pero no problem naman kasi solved na ako sa ride.

OT ng kunti:
FYI, fuel that I find na okay performance are the ff: Shell's VPower (lakas ng hatak), Petron's XCS (mas okay ng kunti sa Gold pero mas matipid for my unit, don't know why), Caltex Gold (normal performance), SeaOil Extreme 97 (same sa Silver kaya nagtataka ako if 97 octane ba talaga 'to like VPower), Caltex Silver (okay performance), UniOil unleaded/Core Oil unleaded/SeaOil unleaded (lahat pangit performance for me ah). Just a note hindi paninira sa brand 'toh its just that ayan ang performance ng accent ko using those fuels. No harm intended

[spymaker]

d kaya ang cause ng knocking eh yung mga humataw agad during break-in period or yung 1st PMS?

[andretti]

Had free time to check this thread ulit and I got surprised with a lot of things that happened.

Anyway, I think its weird that my accent still does not exhibit this knocking or low power issues at metikuloso din ako (also my father) sa kotse. I guess I'm one of those blessed owner na nakakuha ng good batch from the Hyundai shipment . Mine is now running approximately 7500 KM, April batch so 10 months na ang unit ko, 1.4MT P. Black, being serviced at H. Balintawak, halo halo ang kinakarga ko dito to check kung ano magandang fuel & just had a full tank of sea oil's extreme 97 but I have not tried yet P. Blaze sa sobrang mahal na nun .

Eto confirmed, no knocking on our units at same batch tayo April 2011, MT din tapos got my unit from Balintawak.
Di ko lang maisip kung per batch ang problema edi sana, madali nalang na solusyunan ng Hyundai yan...

*spymaker, may mga owners na humataw pero ala padin knocking AFAIK.
Yung akin dinala ko pa Baguio during the break-in, pero not going naman over 4k rpm on the accents.
I think ala naman connection ang break-in sa knocking, edi sana nag advise na ang Hyundai sa break-in procedures.

[meikey]

^^^

Sir andretti, magkabatch tayo. April ko rin nakuha sasakyan, April 16 to be exact. So sometime around february or march yong shipment ng units natin from korea to pinas.


And my unit doesn't have this engine knock/ping. Pero velocity joint ko, napatrabaho ko na, yong steering system napatrabaho ko na rin due to thug sound when turning full right.

[speedtrap]

This month of December 2011, Ok na po kaya bumili ng 2011 Accent 1.4AT?

[bratski]

Malamang nga by batch. Ako first week of May ko nakuha. Pero kung by batch dapat alam na nila solution, or wala lang talagang pakialam si Hari dito. And halos karamihan ng affected mga a/t units. Bibihira ang m/t

Bukas ipapasok ko na naman sa casa unit ko. Pang 6th time na ito for the same problem. Hindi lang kasi pagod at oras nasasayang kakabalik balik kungdi dagdag stress pa sakin. Isipin mo naka ilang beses nako tanggal kabit ng mga abubot sa car tuwing ipapasok ko sa casa. And my accent is not even nearing 2k mileage. Pag hindi ko naman tatanggalin mga gamit baka naman mawala, haaay buhay.

[bratski]

Ano na kaya update sa unit ni mexophilia? Palit ecu yung kanya. Sana ok na.
*LoBudget
Ecm batch talaga yang may problem. Sana naman kasi nagkusa nalang si Hari na ipa recall yang mga problem batch na yan instead of puro update update lang. Well mas makakatipid kasi sila pag update lang instead of replacing, if they can get away with it ika nga....

[bratski]

Got my unit back from greenhills, they did a few test and confirmed that ecm problem nga. Kaso parang ayaw nila mag claim ng warranty for replacement, tinuturo ako sa hyundai erod. Kesyo baka matagalan pa daw bago dumating yung ecm. Kinatwiran ko na bakit si mexophilia 1 week lang napalitan na ecm niya. They'll see what they can do daw...sheesh. Just the same pina process ko na sa kanila warranty claim kasi ayoko na bumalik sa erod na sobrang bagal kumilos.

And by the way, they updated my ecu...again. I'll guess this will have to do until my ecm arrives. As of now ok performance and no knocking, pero in a weeks time malamang low power uli

[erj22]

^ wait and see mode na naman...

[bratski]

^ wait and see mode na naman...

Hindi na kailangan wait and see, isang araw lang itinagal ng update balik uli sa low power, paglabas ko ng casa pauwi at ginamit ko pa after ok naman, no knocking and no low power. Pero kaninang umaga nung ginamit ko uli nag low power na after driving for about 5 kms. Haaay buhay. Nangamoy sunog na electrical na naman yung aircon while nag low power.

[Retz]

Hindi na kailangan wait and see, isang araw lang itinagal ng update balik uli sa low power, paglabas ko ng casa pauwi at ginamit ko pa after ok naman, no knocking and no low power. Pero kaninang umaga nung ginamit ko uli nag low power na after driving for about 5 kms. Haaay buhay. Nangamoy sunog na electrical na naman yung aircon while nag low power.

I think much better if you addressed the issue sa higher management para mapalitan agad ECU mo. From weeks naging 1 day low power. sun and the beach.