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Noise from engine, please help

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Old 06-17-2021, 12:08 PM
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norwegen911
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Default Noise from engine, please help

Can someone help me with this problem. 2006 4S. Approved warranty until 2020(14 years) Fully serviced at porsche since new. Last year they removed Tensioning roller and deflection roller, replaced tensioning roller, idler pulley x 2 . The car has 120.000km


Last edited by norwegen911; 06-17-2021 at 12:36 PM.
Old 06-17-2021, 01:36 PM
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jchapura
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The video sound didn't help me much but you can further diagnose with a couple of steps...
-does the noise change with engine RPM?
-temporarily remove the serpentine belt - does the noise go away?
These steps might help you isolate the cause of the noise.
Old 06-17-2021, 04:35 PM
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BucketList
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Something sure is rattling around in there. Could be water pump failing or a timing chain tensioner is hosed. If it's not leaking any coolant, my guess based on the frequency of the noise is the timing chain bouncing around. I would not rev or drive it if thats what it is.
Old 06-18-2021, 10:23 AM
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Fullyield
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Get a Steelman Electronic Ear and isolate sound to a specific component. Everyone is just guessing until you do.
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Old 06-18-2021, 11:52 AM
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rileyracing1
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I would check the water pump first ..has it ever been replaced ?? get under the car and give the pump pulley a good wiggle for play ...The pump pulley bearing could be going south..

Last edited by rileyracing1; 06-18-2021 at 11:54 AM.
Old 06-19-2021, 05:32 AM
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norwegen911
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According to porsche service history its not changed. Is it possible to change just the bearing or complete pump?

The scratching sound is louder on the left side low i guess. Seen for the backside of the car.

Where is the waterpump located?

Last edited by norwegen911; 06-19-2021 at 05:35 AM.
Old 06-19-2021, 01:22 PM
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southbay
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The water pump is at the bottom left side (red arrow).


https://www.pelicanparts.com/techart...eplacement.htm
Old 06-20-2021, 05:12 PM
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norwegen911
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If the waterpump bearing is bad, would the whole pump still be changed?

How much work is this for a porsche workshop?
Old 06-20-2021, 08:20 PM
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Fullyield
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Originally Posted by norwegen911
If the waterpump bearing is bad, would the whole pump still be changed?

How much work is this for a porsche workshop?
Yes. Water pump comes as a unit. Replacing bearing only is not an option.

$2,000 approximately for replacement by Porsche dealer but price varies depending on parts replaced in addition to pump. I would replace serpentine belt, thermostat housing, thermostat and any coolant hose I had to touch anyway or is easy to replace without a lot of additional labor. As others suggest, inspect coolant expansion tank closely.

Last edited by Fullyield; 06-20-2021 at 08:21 PM.
Old 06-21-2021, 04:21 AM
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norwegen911
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I read that the engine needs to be jacked up. How is that done when the car is in the air

https://vimeo.com/user140093789

Last edited by norwegen911; 06-21-2021 at 04:45 AM.
Old 06-21-2021, 03:04 PM
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norwegen911
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The bearing i gone

Ive bought this stuff and hope to get some help from a local mechanic.

https://www.ecstuning.com/b-graf-par...710601105~grf/

https://www.autodoc.co.uk/metzger/9693390

https://www.autodoc.co.uk/contitech/210489

Correct components?

Last edited by norwegen911; 06-21-2021 at 05:53 PM.
Old 06-22-2021, 11:41 PM
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PaulD_997C4S
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https://www.ecstuning.com/b-graf-par...710601105~grf/
Not recommended, it has a brass impeller. Look for one with a "composite" or plastic impeller.
When the bearing goes bad the water pump shaft can wobble. The impeller is very close to the engine block and it can damage or scratch the surface that mates with the impeller.

A better choice (Pierburg):
https://www.ecstuning.com/b-pierburg...710601106~pie/



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