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Sound from engine.. Tensioner Pulley?
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02-15-2018, 07:19 PM | #24 |
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Thanks for the update, jjaap. So this latest video is after the belt and pulleys were replaced?
I'm hearing three different noises in your video, two of which don't seem normal to me: 1) marble in a jar sound from beginning of video, not perfectly rhythmic 2) kind of swishy maracas-like sound near the 1 minute mark right as the idle settles down after cold start 3) rhythmic ticking, right after the maracas sound starts #1 is the exact sound that I'm having and hope the pulley kit will solve. Contitech kit arrived yesterday and will be installing soon. No idea on #2, maybe belt, but not if video was post-replacement, doesn't seem normal to me either. #3 I would call normal valve train noise, but could possibly be lessened with fresh oil; ditto on question re: what oil are you using?
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02-16-2018, 08:22 AM | #25 |
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02-16-2018, 08:27 AM | #26 | |
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#2 is the second sound (right at 1:00 - correct) that sounds like maracas that just started two weeks ago. Both the ticking and maracas sound (lol) stay until the car is warmed up and then I don't hear it again really until the next full cold start. My indy mechanic couldn't identify and I'm hearing others with similar issues. I'm not noticing any driving issues, so I guess we just call it normal at this point? |
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02-16-2018, 12:06 PM | #28 | |
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Hopefully I'll get a chance to look at mine more closely this weekend now that I have the belt and pulley kit in hand. |
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02-16-2018, 04:17 PM | #29 | |
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It would be interesting to know what you will find but i am not going to investigate these mysterious sounds unless i know its causing me performnce issues.. belt was replaced and you still hear the sound. OBV nothing to do with the belt. I hear the sound closer to the top of the engine and i think its internal. the first sound that is. Actually i know it is because if you remove the oil cap you can hear it more. |
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03-03-2018, 01:26 PM | #30 | ||
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Then I removed the oil filler cap just enough to break the suction, and guess what, the noise got louder, just like pladi's. I don't think that removing the cap actually made it worse, but just made it easier to hear inside the engine. As to what is the cause, I still have no idea...yet!
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03-06-2018, 12:14 PM | #32 | |
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And if i can pinpoint its a vanos selenoid of some type of noise due to the cold temp and looser tolerances. Once the engine is up to temp the tolerances are tighter hence no noise. All of this is a guess but i dont know what else it could be.. Lighter oil might make this noise less. But i dont think the noise is an actual problem. Unless someone can say for sure and exactly why. |
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03-10-2018, 07:37 PM | #33 |
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My car makes a ticking sound when cold at idle too for the past 30000km. Started when I got an oil filter gasket leak. Replaced belt and all pulleys but didn't fix it. I listened around with a stethoscope and couldn't really pinpoint it. Sound doesn't change when oil cap is removed. My limited knowledge guess would be injector?
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03-14-2018, 01:34 PM | #34 |
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I'm wondering if this issue is similar to this recent post.
http://www.e90post.com/forums/showthread.php?t=1420520 Seems as if it could possibly be the vibration dampener (aka harmonic balancer?) going out. I seem to hear the similar "ticking" sound in their video. Their screeching/squealing sound is a little more apparent and loud, more similar to a squeaking belt" than mine was. However, I wonder if they are similar problems. Thoughts?
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03-14-2018, 01:35 PM | #35 | |
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Answer to OP Question from the other post I just linked was:
Update: Just got a call from the indy shop. They said they found that the vibration damper/harmonic balancer was the culprit because it was starting to separate, or something like that. Glad we were able to catch it! I'm getting the exact same noise in the video that the OP posted and it only happens when starting the car after it's been sitting all night. Once the car warms up, the noise is gone. Weirdly, even if the car has been sitting out all day while I'm at work, the noise doesn't come up again. It's only after the car has been sitting all night. We're still seeing temps dip in to the 20s easily overnight whereas temps during the day are in the 30s, if that matters. Edit, some extra info if anyone's interested: I looked up the part online and found it on ECS Tuning's website and it says, "If you vibration damper is failing, it will usually present itself in the form of a squealing noise that sounds like a slipping belt. This is an indication that the rubber ring inside of the vibration damper has dried out and cracked, causing the pulley to slip." Quote:
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03-14-2018, 02:55 PM | #36 | |
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So now i am super confused. Did you fix the ticking noise with the changing the vibration dampener ? Or did you fix some sort of squeak ? In the original video i only hear ticking.. |
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03-14-2018, 09:28 PM | #37 |
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So I posted in the other thread that the indy shop was able to identify my issue as being the vibration damper/harmonic balancer.
My main issue is the squeaky noise that's evident in the video that the OP posted in the other thread, which is what should be fixed by replacing the damper/balancer. I do have a similar rattling/ticking to what's being discussed in this thread, but it seems normal and I've heard it for as long as I can remember in my car. The indy also didn't seem to have any concerns about it, though I admittedly didn't specifically ask about it either. However, they were listening to the car carefully since I brought up the squeaking so I assume they would've heard any odd rattles when listening for the squeaking too.
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03-15-2018, 12:08 PM | #38 | |
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03-15-2018, 02:16 PM | #39 | |
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Otherwise, it turns out the parts for the job won't arrive in time for the indy shop to take care of my car today, but I should have it back tomorrow. I'll try to pop the hood and listen to the engine as I start it up and as it idles after it's been sitting overnight and I'll report back on if any of the rattles/ticking sound different.
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03-16-2018, 01:35 PM | #40 | |
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Thanks for keeping us on the loop. |
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03-18-2018, 01:29 PM | #41 |
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Vibration damper/pulley has been replaced and the squeaking/squealing is gone. The "after" video I took pick up what sounds like some squeaking, but I don't hear it in person so I'm assuming its because of how the mic on my phone picked up the sound and how it was processed, etc. I'll be keeping an ear out though for any more squeaks/squeals.
The shop said the pulleys and the belts all looked fine and they didn't raise any concerns about any of the other noises, so I'm not too concerned at this point. They did say though that my oil pan is just starting to seep the tiniest bit, so that's just GREAT. However, they said it's nothing to be concerned about yet. That and apparently my car's "p/s rear axle seal" likely needs to be replaced soon (I take p/s to mean passenger side). Otherwise, the sounds that are being made other than the squeaking/squealing didn't seem to change much. The idle maybe sounds a bit "cleaner" in the after video, but that's about it. Before vid: After vid: Yes, I know recording video in portrait orientation is bad. These videos though are more for listening than watching. :P
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03-19-2018, 02:29 PM | #42 | |
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Have you checked the axle seals yourself ? To see what they are talking about. ? |
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03-19-2018, 03:10 PM | #43 | |
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This shop hasn't given me any reason to distrust them (quite the opposite, actually, very nice to work with so far), so I'm not too concerned right now. I may consider bringing the car in for a check on the seal in question in 2-3k miles though.
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03-20-2018, 07:20 AM | #44 | |
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