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Hyundai
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Noise on Startup Due to Failing Timing Chain Tensioner on Hyundai Azera

Problem Description and Possible Solution

If you experience excessive engine noise on startup (after the engine has been turned off for several hours) that lasts for more than five or six seconds, turn off the engine and check that the engine oil level is correct. If the oil level is correct, the noise may be caused by the timing chain tensioner. Hyundai has an improved tensioner to correct this problem.

Problem Data
RepairPal Verified
Average mileage: 52,410 (4,000–204,000)
8 model years affected: 2006, 2007, 2008, 2009, more2010, 2012, 2013, 2014
55 people reported this problem
Comments
Viewing 1 - 20 of 31 comments
Loud valve noise at start-up. Hyundai regional representative deemed normal. If this was normal, the noise would have been present when the car was test driven. I test drove the car twice, no such noise. I will never recommend or buy Hyundai again!
I have a clattering noise at cold or hot start after letting the car sit for 5-10 min. Dealer told me it was normal to hear this, frustrating. I will make another appointment to address this but maybe at a different dealership?
Tapping sound on startup. Noise gradually goes away in 30 to 45 seconds of driving. Timing chain tensioner was replaced at 34212 miles. Repairs seemed to fix problem. Then after 500 miles tapping sound has come back. Problem not fixed, in fact as I type this my Azera is sitting in dealership garage. Dealership now says they will not fix it clamming the sound is normal. Can you believe that?
Knocking slapping sound at startup for about 3 seconds. Very noticable but after 3 seconds noise is gone till car is shut off and sits for about a few hours. Oil is new and filter.
Upon start up a rattling sound occurs for about 5 seconds then stops. Occurs when engine has not ran for an hour or more. Brought to dealer and the timing tensioner was replaced and rattle still occured. Dealer is now in contact with Hyundai engineers for what to do now.
That whining noise on startup is the surpentine belt idler pulley, not the timing chain pulley. Pully cost about $20 but difficult to get at the spring loaded pulley to remove the belt. Mine's going in the garage this week to replace.
I've had the same problem. The car was brought into the dealership back in 2011 and they said they "couldn't replicate the sound" which was a flat out lie as I stood there listening to the knock upon start up. Needless to say, it was almost out of warranty and they didn't want to deal with it. Somehow, an upper control arm snapped on the car as well after the car was out of warranty -- I filed a report with the DOT. Hyundai didn't care one bit since nobody was hurt. The entire control arm was $40 with a ball joint (installed myself). I will NEVER go near this car company again. Too many bad experiences.
i had the chain tensioner rep;aced at 77000 miles it makes more noise that the old one.The chin guides broke the dealer replaced guides and tensioner i now have 123000 miles on it when i start it it makes noise for 5min or more when i drive it.i have to let it idle or a while so i dont hear the noise/
I notice the noise that lasts for about 3 seconds, then does away with itself, and I don't notice any issues while driving. However, knowing there is an improved timing chain tensioner by Hyundai, does anybody know the part number for that new one?
loud noise, sounds like a belt sliping at start up. gets quiter as you drive but you still can when you excelarate.
The car has now been in the Hyundai dealer for 3 days. They are replacing parts for the front timing chain. They are also checking the back chain for the same problem. Hoping this fixes the problem.
I started car this morning loud knocking sound, after few minutes noise goes away, waiting to let car sit a few hours and start it again to see if I get same issue, making appointment with dealer ASAP
Here's a YouTube clip of my 2013 Azera. I now have 50100 miles on it. Rattled loudly since 12k miles. All new fuel injectors, new fuel rail assembly, CAM phasers, CVVT system at 10k miles. I'm on my 2nd completely new timing chain, 1st repair around 20k, now at 47k. It would be a great car if the whole engine wasn't poorly designed. The car is a lemon. Telling us that's normal is a joke... we know the difference. If I wasn't still upside down, & did not have the full 100k warranty, the car would be history. I have a dealer that has worked with me, especially after contacting Hyundai corporate and after giving them lousy bad reviews, it got their attention and they have done well so far to take care of it. The dealer says my car is flagged, and Hyundai corporate is aware every time this car goes in for service. I hope they continue to deliver good service and stand behind their product. Time will tell, I've only had it repaired with the 2nd timing chain 3 weeks. Hope this helps!

https://youtu.be/SrqxJ1qerJ8
My 2013 Azera limited started making noise around 38k the Dealer first put oil additive in it didnt help, then they tried thicker oil, then they tried different brand oil filter nothing worked only got worse and at 43k they put in new cam phasers/variable valve adjusters, timing chain and guides and tensioner about $4k on there dime no noise for about 300 miles, then started having rough startups, misfire codes, fuel economy average was 15 mpg i use to average 23mpg, they changed spark plugs and cleaned fuel injectors and pulled intake and cleaned valves and nothing changed, then the dealer told me the local Hyundai rep said it was bad gas and all my fault. I said how can I put bad fuel in from different gas stations for the last 5k miles, so i started running only 93 octane and filmed my fill ups. The car kept getting worse and to the point it had a misfire all the time took it back and showed them all my videos and all my receipts and recorded every time the check engine light came on and recorded all the issues and pushed it real hard, they finally pulled engine out and found out the repairs didnt work the cam phaser variable valve was not working and had low compression on some cylinders, I now have 3,300 miles on brand new engine and no noise and runs perfect yes it took some time but I wasnt taking no or BS for answers. If you have issues at under 60k miles push the issue, Hyundai knows there was a issue on these 3.3 v6 and were secretly trying to correct it on the newer models.
A friend of mine has a Kia Cadenza same engine same issue and they put new engine in his as well he has over 35k on his new engine still no issues.
Rattling noise at startup. I happened to notice it while starting it in the garage. I have taken it to the dealer now 5 times and have been told the same thing "it is normal". I had a district manager from Hyundai come out and he to said the same thing. It seems to be worse the warmer the weather is. It lasts for about 1-3 seconds then seems to run fine afterwards. This is my 5th Hyundai and I have never had a problem before now. Maybe this will be my last...