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Tick/knock?

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Old 06-22-2019, 03:02 PM
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kpv3484
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Default Tick/knock?

08 C2, PPI performed 700 miles ago and just rolled over 50k miles yesterday. Took it out for a drive and ran it to about 15 miles left of gas and planned to refuel in a day or so. Got home and pulled in the garage and noticed a tick/knock from the rear. Considering I just got the car I am hoping I’m just paranoid but would love input from anyone with more knowledge and experience. Here’s a video of it running at temp. Oil level is full and drives normal. Thoughts?
Old 06-22-2019, 03:03 PM
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kpv3484
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Can’t get the video to upload!!! Ugh
Old 06-22-2019, 03:26 PM
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LexVan
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Low on fuel? Your fuel pump gets extra noisy when low on fuel since it's in your tank. Could also be that.
Old 06-22-2019, 03:32 PM
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kpv3484
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Was hoping that was the issue but refueled last night and it’s still making noticeable today though not as prominent.
Old 06-23-2019, 10:30 AM
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Petza914
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Upload the video to YouTube and then post the link here. Videos exceed the direct upload size limit.
Old 06-23-2019, 01:07 PM
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kpv3484
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Thanks for the advice! Here it is.

Old 06-23-2019, 02:02 PM
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ADias
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Scope your cylinders - from the top and bottom.
Old 06-23-2019, 02:12 PM
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jchapura
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Please also temporarily remove your serpentine belt (completely; don't want an accident) and re-shoot the video.
Old 06-23-2019, 05:47 PM
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G.I.G.
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Possibly a water pump going south? If you listen from underneath the car on the driver's side, does it get louder?

The reason (I'm assuming) @jchapura suggests removing the serpentine belt is to help determine if it is an ancillary component that could be the culprit, or the engine itself.

Last edited by G.I.G.; 06-23-2019 at 07:04 PM.
Old 06-23-2019, 06:26 PM
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kpv3484
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Yes, it gets noticeable louder when looking under the driver side rear.
Old 06-23-2019, 07:03 PM
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Petza914
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Originally Posted by jchapura
Please also temporarily remove your serpentine belt (completely; don't want an accident) and re-shoot the video.
That's a good idea.

The noise I don't like is the clunk, clunk you can hear a couple of times.
Old 06-23-2019, 07:10 PM
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kpv3484
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Dropping it at the local shop tomorrow morning. Wish me luck!
Old 06-23-2019, 07:11 PM
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G.I.G.
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Originally Posted by kpv3484
Dropping it at the local shop tomorrow morning. Wish me luck!
Good luck. Please keep us posted.
Old 06-23-2019, 09:01 PM
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kpv3484
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Will do!

if it’s the WP, any others items that make sense to do at the same time?



Last edited by kpv3484; 06-22-2020 at 10:43 AM.
Old 06-23-2019, 10:09 PM
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jchapura
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Low temp thermostat. Serpentine belt. Pulley kit. Coolant flush.


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