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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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D5 158kw 2015 tapping/knocking soundsViews : 1839 Replies : 16Users Viewing This Thread : |
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Aug 30th, 2023, 19:54 | #1 |
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D5 158kw 2015 tapping/knocking sounds
Hey eveyone, I'm trying to understand what is causing a strange noise in my 2015 V70 D5. This is my first D5 and i have no previous experience with them Maybe someone could comment if it sounds normal? . With a cold engine there is a noticeable rhythmic tapping sound that is best heard from inside the cabin. It quiets down after warming up but never fully disappears.
https://youtu.be/nbwGndTAF5M |
Sep 4th, 2023, 22:33 | #2 |
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They are not the quietest of engines anyway.
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Sep 5th, 2023, 15:12 | #3 |
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May be worth checking if you have a vacuum leak anywhere. If so the vacuum pump can be noisy.
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Sep 9th, 2023, 13:39 | #4 |
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Checked the vacuum lines. All seems good. Disconnecting hoses doesn’t change the sound much. Only knocking under the oil cap gets loud with the hoses off. Also checked the vacuum with a gauge and its stable with no fluctuations. (Checked both vacuum lines, to the vacuum reservoir and to the egr)
I've also replaced one injector that seemed noisy. No change, been moving injectors to the next cylinder, so far no change. (Always coded too) I'd leave it but as its a diesel and noisy by nature but its the only one of my vehicles that has a distinct noise audible in the interior and i find that annoying. I have other 4cyl diesels and while they are much louder outside, all you hear in the car is engine rumble. No tapping or anything. I have found similar sounding engines on YouTube. https://youtu.be/WFyxBSLYchQ?si=e3ZkKlr9oCo84_-8 https://youtu.be/geHRLbBTEWc?si=vrEbgQdO1BLdWOsM |
Sep 10th, 2023, 16:54 | #5 |
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Maybe checking the rubbers in the footwell to the enginebay of the pedals ...if they are loose its get noisy inside
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Sep 11th, 2023, 19:00 | #6 |
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The Following User Says Thank You to MartinKarafin For This Useful Post: |
Sep 11th, 2023, 19:22 | #7 |
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Also to anyone suggesting lifters. I had them changed out at the beginning of the year along with all the belts and associated.
No change after the change so that is probably not the issue. |
Sep 13th, 2023, 21:03 | #8 |
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Hi Martin,
I have the same engine with the same problem. I have started the thread in June so you can check it if you haven't already. I am about to replace the engine as it is driving me nuts, but it would be nice to know first what is a cause. Please let us know here if you find a solution. Last edited by Zafree; Sep 13th, 2023 at 21:05. |
Sep 14th, 2023, 06:53 | #9 | |
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Quote:
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Sep 19th, 2023, 19:06 | #10 | |
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Quote:
Will try to listen to the manifold with a stethoscope this weekend. Last edited by MartinKarafin; Sep 19th, 2023 at 19:24. |
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