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passat b8 bitdi engin noise
19-07-2022, 06:07 AM,
Post: #1
ZVW  passat b8 bitdi engin noise
Hi folks!

I have issue  with my bi tdi passat.
When it warms up, a knocking sound can be heard in the passenger compartment from the engine,but when dpf is regenerates knocking sound is go away.

Maybe if someone has encountered this issue before.

Thanks in advanced!
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08-08-2022, 09:19 AM,
Post: #2
RE: passat b8 bitdi engin noise
Hi,

Is it at low rpm's and asking power from the engine?
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[+] 1 user says Thank You to unclassified for this post
12-08-2022, 08:29 AM,
Post: #3
RE: passat b8 bitdi engin noise
(08-08-2022, 09:19 AM)unclassified Wrote:  Hi,

Is it at low rpm's and asking power from the engine?
hi
yep,exactly
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16-08-2022, 17:28 PM,
Post: #4
RE: passat b8 bitdi engin noise
My tip is Dual Mass Flywheel
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[+] 2 users say Thank You to Noexp for this post
17-08-2022, 05:52 AM,
Post: #5
RE: passat b8 bitdi engin noise
(16-08-2022, 17:28 PM)Noexp Wrote:  My tip is Dual Mass Flywheel
thx but that's already repaired.
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18-08-2022, 15:01 PM,
Post: #6
RE: passat b8 bitdi engin noise
Take a stethoscope and try to locate the noise.  I didn't hear the noise...
Perhaps a better description of the knocking would help
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[+] 1 user says Thank You to Noexp for this post
19-08-2022, 06:02 AM,
Post: #7
RE: passat b8 bitdi engin noise
(18-08-2022, 15:01 PM)Noexp Wrote:  Take a stethoscope and try to locate the noise.  I didn't hear the noise...
Perhaps a better description of the knocking would help
noise


Attached Files
noise.rar
File Type: .rar
Downloaded: 6 times
Size: 116 bytes

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03-10-2022, 18:46 PM,
Post: #8
RE: passat b8 bitdi engin noise
Hi,

Could be "diesel knock".

If it's, might be due to DPF being (partially) clogged because of short city driving etc.

Also could be that some of the injectors are bad.

-Niko
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[+] 1 user says Thank You to zeable for this post
04-10-2022, 00:36 AM,
Post: #9
RE: passat b8 bitdi engin noise
Could you check the percentage of soot in the particulate filter?
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[+] 1 user says Thank You to leonfrrojito for this post
04-10-2022, 13:50 PM,
Post: #10
RE: passat b8 bitdi engin noise
(03-10-2022, 18:46 PM)zeable Wrote:  Hi,

Could be "diesel knock".

If it's, might be due to DPF being (partially) clogged because of short city driving etc.

Also could be that some of the injectors are bad.

-Niko
hi,thx for answer!
I have already replaced all the injectors with original vw ones
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