Digidick Posted February 3, 2021 Report Share Posted February 3, 2021 Popped out tonight and when I arrived at my destination I left the car idling and after a few minutes I could hear what’s best described as a tappet sound on the passenger side. Car idled for a further 5-10 minutes and started to quieten down. I then drove home, parked up and after a few minutes the noise came back. If you rev the engine it goes but reappears as it settles to an idle. Not there from a cold start and not there at a hot/warm idle until after a few minutes. You can here it as the revs settle after blipping the throttle video link attached... Link to comment Share on other sites More sharing options...
Lonewolfgjp Posted February 3, 2021 Report Share Posted February 3, 2021 Has the car been parked up for a while? Also did you go for a decent drive and get nice and warm or just a local drive. Mine can sometimes sound a bit tappy if it has been stood for weeks but normally goes away after a hour or so of brisk driving. I think the oil can drain out of the valves and it makes it sound like this. Im sure there will be some more mechanical minded people answer your question but that’s my thoughts 👍 Link to comment Share on other sites More sharing options...
Digidick Posted February 3, 2021 Author Report Share Posted February 3, 2021 It had been for a 25 minute drive and like I say the tapping started after a few minutes of idling. If I turn the car off and restart it again straight away it takes a minute or so for the noise to come back again. I’m not mechanically minded enough to know what’s happening as it idles, are the pressures dropping and making the oil flow slower/less compared to when it’s driving? Link to comment Share on other sites More sharing options...
Lennym1984 Posted February 4, 2021 Report Share Posted February 4, 2021 I think I'd get that looked at. It sounds quite loud from the video and doesn't really sound tappety to my ears Link to comment Share on other sites More sharing options...
bandit_287 Posted February 4, 2021 Report Share Posted February 4, 2021 My old 987.2 very rarely used to fire up from cold and tap, a hydraulic tappet used to sometimes drain it’s oil and take a while to re-fill. It was a constant tap though heard through the rev range and also on tick over, it’d take about 5 mins or until the engine got up to temperature until it silenced. It happened about 3 times in six years. I don’t think yours is a tappet as the engine would be warm so they would be pressurised and it’s not a constant tap, it disappears under small revs and only heard at idle. I think that might be something more sinister, get it checked out ASAP. I hope I’m wrong. Link to comment Share on other sites More sharing options...
PFX Posted February 4, 2021 Report Share Posted February 4, 2021 Alternator bearing or a pulley perhaps, which may be most prominent at a certain rev range and change as the temperature in the engine compartment changes due to expanding materials with increasing temperature etc.? This does not strike me as a hydro-valve/lifter noise (am no expert at all but going by the videos out there which show the noise that sort of problem causes), but as others have said before, I'd definitely take it to my garage in any case and have them listen to it. Link to comment Share on other sites More sharing options...
Ninesomething Posted February 4, 2021 Report Share Posted February 4, 2021 Have you wiped the tailpipe with your finger? Does the car use oil? Link to comment Share on other sites More sharing options...
Digidick Posted February 4, 2021 Author Report Share Posted February 4, 2021 Been out in it today and nothing, sounds great. Cold start was perfect as I expected and after a good blast I left it to idle and the noise stayed away. Uses no oil, doesn’t smoke and plenty of power. Found another owner on a FB Porsche group that has the same issue, he’s sent me a video and very similar. So far he’s had a camera to check the bores and all good and if he turns on the aircon the noise goes away, it’s mad but definitely sounds like my issue. Link to comment Share on other sites More sharing options...
½cwt Posted February 4, 2021 Report Share Posted February 4, 2021 My 986S sometimes has a tappet noise from cold start for a while particularly in colder weather. It was worse on the previous oil Millers 5W40 than on the current oil Mobil 1 New Life 0W40, but still there occasionally. Very rare that it doesn't go when fully warmed up. Link to comment Share on other sites More sharing options...
Ninesomething Posted February 4, 2021 Report Share Posted February 4, 2021 4 hours ago, Digidick said: if he turns on the aircon the noise goes away, it’s mad but definitely sounds like my issue. Now that is a new one. I turned down an S that had a similar noise. It was the first car I tried and I was paranoid about any engine noise.... Link to comment Share on other sites More sharing options...
droptop Posted February 4, 2021 Report Share Posted February 4, 2021 Doesn’t sound normal. If it was me I would get it checked out purely for peace of mind. Link to comment Share on other sites More sharing options...
Digidick Posted February 5, 2021 Author Report Share Posted February 5, 2021 13 hours ago, JonSta said: Now that is a new one. I turned down an S that had a similar noise. It was the first car I tried and I was paranoid about any engine noise.... Just to show you I’m not going mad here is his video.... Aircon off and on, noise off and on Link to comment Share on other sites More sharing options...
PFX Posted February 5, 2021 Report Share Posted February 5, 2021 1 hour ago, Digidick said: Just to show you I’m not going mad here is his video.... Aircon off and on, noise off and on Again, wondering if it's one of the pulleys, alternator bearing or even the aircon compressor, which would all hang off the v-belt; turning on the aircon would get the compressor to kick in and add tension/load to the belt, which puts tension/load on whatever part is not quite right. My 3 pence worth theory. I have seen people taking off the v-belt then run the engine ON IDLE just to see if that changes anything - personally I'd rather have this done by someone more experienced but this should be an easy thing to do and not cost much. Mind, while you get this checked you may want to have your v-belt (polyrib belt) changed unless recently done, which is fairly cheap (I had mine done at CPS as a precaution when I had my first service done last year and at CPS it cost the princely sum of 79.- https://www.cotswoldspecialists.co.uk/services/porsche-servicing-pricing/). Hope you get to the bottom of it soon, I can imagine this must be driving you bonkers 🙃 Link to comment Share on other sites More sharing options...
Mattman42 Posted February 5, 2021 Report Share Posted February 5, 2021 my 987.2 used to have a ticking noise sometimes, usually when cold and after being left for a while between drives. My local indy diagnosed as a sticky lifter as it would typically go away after a drive and everything got lubricated again. In the end I used some of this for about 1,000 miles before an oil change and that seemed to solve the problem once and for all - i'm guessing something had just got gunked up and this stuff cleaned it all out and then got flushed away in the oil change https://www.halfords.com/motoring/engine-oils-and-fluids/fuel-and-oil-additives/wynns-hydraulic-valve-lifter-350ml-268607.html Link to comment Share on other sites More sharing options...
Digidick Posted February 5, 2021 Author Report Share Posted February 5, 2021 51 minutes ago, PFX said: Again, wondering if it's one of the pulleys, alternator bearing or even the aircon compressor, which would all hang off the v-belt; turning on the aircon would get the compressor to kick in and add tension/load to the belt, which puts tension/load on whatever part is not quite right. My 3 pence worth theory. I have seen people taking off the v-belt then run the engine ON IDLE just to see if that changes anything - personally I'd rather have this done by someone more experienced but this should be an easy thing to do and not cost much. Mind, while you get this checked you may want to have your v-belt (polyrib belt) changed unless recently done, which is fairly cheap (I had mine done at CPS as a precaution when I had my first service done last year and at CPS it cost the princely sum of 79.- https://www.cotswoldspecialists.co.uk/services/porsche-servicing-pricing/). Hope you get to the bottom of it soon, I can imagine this must be driving you bonkers 🙃 Just to be clear the aircon off/on isn’t me it’s a FB pal who has a similar sound. Not sure if he’s tried the above yet though. Link to comment Share on other sites More sharing options...
Digidick Posted February 5, 2021 Author Report Share Posted February 5, 2021 28 minutes ago, Mattman42 said: my 987.2 used to have a ticking noise sometimes, usually when cold and after being left for a while between drives. My local indy diagnosed as a sticky lifter as it would typically go away after a drive and everything got lubricated again. In the end I used some of this for about 1,000 miles before an oil change and that seemed to solve the problem once and for all - i'm guessing something had just got gunked up and this stuff cleaned it all out and then got flushed away in the oil change https://www.halfords.com/motoring/engine-oils-and-fluids/fuel-and-oil-additives/wynns-hydraulic-valve-lifter-350ml-268607.html Cheers. I am looking into adding something and looked at products from Forte and Liquid Moly. Link to comment Share on other sites More sharing options...
PFX Posted February 5, 2021 Report Share Posted February 5, 2021 2 hours ago, Digidick said: Just to be clear the aircon off/on isn’t me it’s a FB pal who has a similar sound. Not sure if he’s tried the above yet though. AH OK, my bad I must have misread 🥴 Link to comment Share on other sites More sharing options...
Digidick Posted February 5, 2021 Author Report Share Posted February 5, 2021 hahaa no worries. 😄 Link to comment Share on other sites More sharing options...
Greyanglia Posted February 13, 2021 Report Share Posted February 13, 2021 On 2/4/2021 at 6:26 PM, JonSta said: Now that is a new one. I turned down an S that had a similar noise. It was the first car I tried and I was paranoid about any engine noise.... That wouldn’t have been a silver one in Surrey last summer as I did exactly the same? First one I had looked at and first Porsche so didn’t want to take any chances. Often wonder if I walked away from what seemed like a half decent car otherwise 😃 Link to comment Share on other sites More sharing options...
sa utah Posted February 14, 2021 Report Share Posted February 14, 2021 my own car when I first bought it had a noisy water pump and free wheel pulley. All swapped and all those noises have gone. I do find the noises are amplified by the car body work and the sound bouncing off the ground so they can sound worse than things are. Link to comment Share on other sites More sharing options...
Ninesomething Posted February 14, 2021 Report Share Posted February 14, 2021 21 hours ago, Greyanglia said: That wouldn’t have been a silver one in Surrey last summer as I did exactly the same? First one I had looked at and first Porsche so didn’t want to take any chances. Often wonder if I walked away from what seemed like a half decent car otherwise 😃 It was an 05 silver S and I tried it in Jan of last year in North London. I had my hand in my pocket to hand over the cash and as I stood there it was idling and I heard tap tap tap. Shame it was a nice looking car. I recall it was v high mileage - can't remember exactly how high. Link to comment Share on other sites More sharing options...
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