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Ticking noise on 997 GTS

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Old 04-08-2018 | 03:41 AM
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Default Ticking noise on 997 GTS

Hey Guys,

I noticed a ticking noise a couple of weeks ago after a canyon run (3-4 hour drive) since then I drove the car a couple of times maybe on 30-60 minutes drives and didn’t notice the noise. My car was due for an oil change and decided to take the car to Auto Strausse in Costa Mesa Ca and have Robert try to diagnose the noise. I played the video for him and he thought that it could be the valves. Well after the oil change I told him I would come back if I heard the noise come back which it did but not as bad, by the time I drove back the noise was gone. I just got back from a short drive and heard the noise come back but once again not as bad as video. Any insights on this??




Last edited by JPM_GTS; 04-08-2018 at 03:56 AM.
Old 04-08-2018 | 03:47 AM
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I'm no expert but I think it has something to do with longer / harder drives increasing oil temperature, which makes it thinner. The valve train then has thinner oil coating it resulting in audible ticking. I think it's less prevalent with some oils (Motul X-Cess) than others (M1).

But I could be completely wrong.

Edit: after watching the video, I'm completely wrong.

Last edited by mcfisticuffs; 04-08-2018 at 10:08 AM.
Old 04-08-2018 | 04:00 AM
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Thanks for the info. That's what I found online as well and today I went from Pennzoil Platinum Euro to Motul X-cess and the noise seems to be less but I haven't gone on a long drive yet. The video is up now.
Old 04-08-2018 | 10:02 AM
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I would think if it was a valve noise it would be rhythmic all the time at some interval and nor more random as yours seems to be. With the car cold, band around on the exhaust system (mufflers and cats) you might have something loose inside one of them that occasionally rattles or vibrates.
Old 04-08-2018 | 10:22 AM
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Yes I have an idea. My engine also had a ticking noise which also intermittent and just sounded metal ticky over the somewhat noisy engine. When I took it to the Porsche dealership even the lead mechanic looked concerned, but when we put the car on the hoist he inserted a screwdriver at the belt tensioner and noise went away.

Replaced the belt tensioner and all is good. Still a noisy engine but the ticking went away. 09 C2S with 32km
Old 04-08-2018 | 11:41 AM
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When I bought my 997.1 it had Pentosin High Performance oil in it. On colder San Fran mornings I could hear some valve noise if the music was off. Since switching to Motul 8100 Xcess 5w40 ive never heard it again.
Old 04-08-2018 | 12:27 PM
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Reminds me of that video........is that a ticking I hear? Sounds random as mentioned above, curious.
Old 04-08-2018 | 02:18 PM
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I think I have heard similar videos with that random metallic tick tapping. I am not sure I heard any resolution.
Old 04-08-2018 | 02:27 PM
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Ping Jake Raby and ask him for a listen.
Old 04-08-2018 | 02:54 PM
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That is a metallic ticking noise that does not seem to correspond to engine rpm. The fact that it happened most after a Canyon run sounds like it may just be the metallic tinking noise that happens from rapid change in temperature of metallic parts in the car particularly the exhaust system.

You can test this by turning the engine off when you get done with your canyon run and does the tinking noise still persist or does it go away
Old 04-08-2018 | 03:05 PM
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Based on my limited 5 years experience (2010 Carrera 2 and 2011 Targa 4) I have to say that the noise is within the usual noise pattern/level of DFI engines.

Regards,

CF
Old 04-08-2018 | 03:37 PM
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Too random to be normal. Sounds like spark is arching. Almost like the Van de Graaff Generator from grade school science class.
Old 04-08-2018 | 04:09 PM
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If you were in salt-land where it snows, I would of said some aluminum shield is giving way... Hmmm....

Peace
Bruce in Philly
Old 04-08-2018 | 10:19 PM
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Originally Posted by JPM_GTS
Hey Guys,

I noticed a ticking noise a couple of weeks ago after a canyon run (3-4 hour drive) since then I drove the car a couple of times maybe on 30-60 minutes drives and didn’t notice the noise. My car was due for an oil change and decided to take the car to Auto Strausse in Costa Mesa Ca and have Robert try to diagnose the noise. I played the video for him and he thought that it could be the valves. Well after the oil change I told him I would come back if I heard the noise come back which it did but not as bad, by the time I drove back the noise was gone. I just got back from a short drive and heard the noise come back but once again not as bad as video. Any insights on this??



https://youtu.be/QTSdC6Cumr8
My GTS has done this ever since I've owned it. It was compression/leakdown tested before I bought it so the engine checked out okay. I had asked the dealership what it was as well and they told me it's quite common (although I didn't hear it on other 997 C2S's) and was simply just some exhaust parts expanding/contracting. Not sure if they're right, but years later I still have that same noise and no problems.
Old 04-09-2018 | 08:52 AM
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Hey OP, does the tick become more frequent / louder when clutch pressed in? (if not a PDK, that is...)


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