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queenmonkey
Trainee


Joined: 13 Jul 2016
Posts: 56



PostPosted: Wed Aug 01, 2018 7:59 pm    Post subject: Tapping Noise - video Reply with quote

Hi guys, i've developed a tapping noise over the past 18 months. It used to only be for a few seconds at start up but now is getting more regular and louder! My car is a 98 C2 3.4 with 80k on it. I've changed plugs etc and had a new manifold in the last fews days - made no difference. It does quieten down at times and then come back. The weirdest thing is that sometimes - when i thottle off (and the windows down) i can hear it out of tune with the rest of the engine - almost as though there's something running on it's own momentum.

https://www.youtube.com/watch?v=Nywk3sLSe84

Any ideas?

ps it's coming from the drivers side bank

QM
 
  
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coullstar
Barcelona


Joined: 15 Sep 2015
Posts: 1317
Location: Aberdeen/Torphins


PostPosted: Wed Aug 01, 2018 10:09 pm    Post subject: Reply with quote

Does sound like a tappet. Anything found in the oil filter on the last change?

Were any of the plugs different from the others? Oil usage okay?
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queenmonkey
Trainee


Joined: 13 Jul 2016
Posts: 56



PostPosted: Thu Aug 02, 2018 5:02 am    Post subject: Reply with quote

Hi Coullstar, no discernable difference in plugs. Oil filter looked ok. Oil consumption is minimal. Whilst the mileage is 80k the engine was replaced at 30k.
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coullstar
Barcelona


Joined: 15 Sep 2015
Posts: 1317
Location: Aberdeen/Torphins


PostPosted: Thu Aug 02, 2018 7:40 am    Post subject: Reply with quote

Mine has a noisy tappet as well albeit quieter than yours, yours does seem quite loud. I asked about this and it appears its fairly common.

What oil spec are you using?
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queenmonkey
Trainee


Joined: 13 Jul 2016
Posts: 56



PostPosted: Thu Aug 02, 2018 5:31 pm    Post subject: Reply with quote

Hi Coullstar, it is loud and is getting on my nerves! I'm putting Mobil 1 0/40 in it as it was on offer at Costcos's and the previous owner used it I was thinking of giving it a flush with something like 'seafoam' and then try a thicker oil. Are you aware any oils/ grades that might suit this type of issue?
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Phil 997
Brands Hatch
Brands Hatch


Joined: 05 Dec 2015
Posts: 14561
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Thu Aug 02, 2018 6:25 pm    Post subject: Reply with quote

personally on 80k miles I would be using 10w50 oil either millers nano as reccomended by hartech or mobil Thumb
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5554
Location: Brighton


PostPosted: Thu Aug 02, 2018 6:52 pm    Post subject: Reply with quote

Sounds very much like a tappet to me ..


Lets face it .. you have had the noise for 18 monthes and its slowly gotten worse .. if it was something terminal it would have died long ago so we can pretty much rule out tensioners , chains .. big end etc due to the time its been there .

In the early stages you notice a difference in noise when its cold to when its hot .. i expect yours just makes the noise all the time now.

Downside .. you need the cams removed on that bank to get at them ... can be done in situe from memory but at a total guess im thinking £500 ish notes to replace one broken tappet ... lot more if the engine has to be dropped or its all of them on that bank ..
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queenmonkey
Trainee


Joined: 13 Jul 2016
Posts: 56



PostPosted: Wed Aug 08, 2018 6:39 pm    Post subject: Reply with quote

Thanks for all your comments guys.
 
  
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