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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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Metallic tapping noise when oil filler cap removed.Views : 2791 Replies : 21Users Viewing This Thread : |
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Dec 8th, 2022, 12:48 | #1 |
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Metallic tapping noise when oil filler cap removed.
Hi, Can anyone throw some light on this please: Volvo D5 2.4, 2013. 47,000 miles.
When I remove oil filler cap with engine ticking over there is a metallic tick/tapping noise, which is quite loud. Put cap back on there's no noise. I have read in the forum about popping noise, but I would say this is more metallic. Any idea's please. Are hydraulic tappets fitted to this engine ! Thank you. |
Dec 8th, 2022, 19:10 | #2 |
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A sound clip will help us to help you. Yes engine has hydraulic tappets
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Dec 15th, 2022, 16:21 | #3 | |
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Quote:
Have you done this job ? Regards, |
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Dec 15th, 2022, 16:37 | #4 |
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Besides what the manual or 1 think what the "correct" oil should be....im pretty sure it has nothing to do with your noise.
Im suspecting its the vacuum pump but we need for sure with a sound clip |
Dec 16th, 2022, 11:18 | #5 |
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Have a go
I will have another go at downloading 'noise'. Thank you.
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Dec 16th, 2022, 11:37 | #6 |
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Dec 16th, 2022, 15:42 | #7 |
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Video attached.
AnyConv.com__png file.jpeg (31.5 KB)
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Dec 16th, 2022, 18:10 | #8 | |
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Quote:
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Dec 17th, 2022, 19:21 | #9 | |
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Quote:
The manual gearbox versions have a egr bypass wich is activated by a solenoid with the vacuum system ... The vacuum box almost every time goes bad which means that if its activated the vacuum system draws in air which is disposed in the valve cover where the vacuum pump is located and creates a popping noise.When warmed up the bypass isnt used ...and the solenoid is closed. What i did it closing the tube right before the box..this means that the cat is slightly longer warmed up...but the coolant will be faster warmed up and no vacuumpump losses (which also impairs the enginemounts) The auto gearboxes dont have this bypass btw |
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Dec 18th, 2022, 09:09 | #10 |
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Jeuss bro, that's is probably best answer I ever read. I gave up from searching cause of that noise. Also I bought 20+20 rocker arns and lifters to change it (my mech gave up last minute, I send parts back). Yes, my car has M66
You have pic where did you close? |
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