Engine noise
Junior Member
Joined: Jul 2007
Posts: 13
From:
RE: NEWBIE... Hearing the noise...
ORIGINAL: Rogerf
[:'(]About 3 weeks ago we began hearing a new noise, something like a sewing machine. The pitch of the noise changed with the rpm's of the engine including when it shifted gears. I took it in to Hyundai and they determined it was the bearings in the 'belt tensioner', and they ordered a new one.
The ordered part came in and I left the car with them yesterday with the understanding they would also look at the 'ticking' noise reported to them 15,000 miles ago and looked at already 4 times in the past. Well, they installed the new part and that noise is gone. Thenyhey called Hyundai Tech Service about the ticking noiseand ended up dropping the pan and checking the oil pump along with everything else they could look at. They feel the noise is coming from the lower portion of the engine and feel this was confirmed using a stethoscope.
Roger
[:'(]About 3 weeks ago we began hearing a new noise, something like a sewing machine. The pitch of the noise changed with the rpm's of the engine including when it shifted gears. I took it in to Hyundai and they determined it was the bearings in the 'belt tensioner', and they ordered a new one.
The ordered part came in and I left the car with them yesterday with the understanding they would also look at the 'ticking' noise reported to them 15,000 miles ago and looked at already 4 times in the past. Well, they installed the new part and that noise is gone. Thenyhey called Hyundai Tech Service about the ticking noiseand ended up dropping the pan and checking the oil pump along with everything else they could look at. They feel the noise is coming from the lower portion of the engine and feel this was confirmed using a stethoscope.
Roger
You issue with the "sewing machine" sound... What does this exactly sound like? I actually uploaded an audio clip for you to listen to my wifes car. Sounds to me a bearing is going bad not sure....
**Don't mind the gate shutting sound in the background. *** this has been bugging us since 12k miles and now we are at 22k
http://www.supload.com/sound_confirm...t=90729223.wma
Glad your is fixed, looks like we both had the same problem. Thank God for warranties.
Junior Member
Joined: Nov 2007
Posts: 2
RE: Engine noise
I'm glad to hear the engine noise I hear others have the same problem. My dealer is trying to tell me its because I use Mobil 1 oil and should have the oil changed more frequently.
Now that the cold weather is here the problem is much more pronouced. Once the car warms up the tick goes away. I am having the dealer change the oil to the "Hyundai approved" 5W-20 and the tick better go away or they will pay for the oil change.
Now that the cold weather is here the problem is much more pronouced. Once the car warms up the tick goes away. I am having the dealer change the oil to the "Hyundai approved" 5W-20 and the tick better go away or they will pay for the oil change.
Junior Member
Joined: Aug 2006
Posts: 26
From:
RE: Engine noise
My dealer told me that Mobil 1 is not recommended and they have used their 5W-20W on every oil change so far. I still have the 'ticking' noise just like I did 20,000 miles ago. This last oil change they examined the oil and residue and could not find any problems but the ticking is still there.
Rogerf
Rogerf
Junior Member
Joined: Nov 2006
Posts: 22
RE: Engine noise
The tapping is almost surely coming from aswiping tappet caused by too thick oil that doesn't lubricate that valvecam. The rest is a likelyvalve clearance a little on the wide side. If the noise goes away as the engine warms thats probably it and yes probably not serious. However, if it doesn't, you need to have the dealer find the miscreant valve and readjust it. It ain't easy so be prepared to leave it a day or two.The Azera doesn't have automatic adjusting hydraulic valvelifters as good old American cars;they are more like Honda 4 cylinder engines. Valve clearance is fixed byvalve racks shimmed much the same as Fiats tho instead of screw locks. There is a good reason Hyundai recommends a good 20wt synthetic oil. It flows better into tight clearances and is much harder to wipe from between friction surfaces. Note your service requirements include checking valve clearances at least audibly.
Oil gets thinner with increasing mileage, aka viscosity with engine operating hours is decreasing, and while it flows well it becomes easy to wipe away between friction sutrfaces.. Synthetic oil is probably the best solution as it better lubricates the cam surfaces. And doesn't lose viscosity as much as conventional oils. The really nice thing about synthetics is it has much greater film strength than mineral oils and thus lubricates the valve cam to disc surfaces better. 6000 miles between oil changes with synthetic oils appears to be very good. Yeah, I know mobil 1 oil changes are $20 a change plus filter. Its a lot like helmets (whats your head worth?) Whats your engine worth?
Oil gets thinner with increasing mileage, aka viscosity with engine operating hours is decreasing, and while it flows well it becomes easy to wipe away between friction sutrfaces.. Synthetic oil is probably the best solution as it better lubricates the cam surfaces. And doesn't lose viscosity as much as conventional oils. The really nice thing about synthetics is it has much greater film strength than mineral oils and thus lubricates the valve cam to disc surfaces better. 6000 miles between oil changes with synthetic oils appears to be very good. Yeah, I know mobil 1 oil changes are $20 a change plus filter. Its a lot like helmets (whats your head worth?) Whats your engine worth?
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