swang Posted December 21, 2021 Report Share Posted December 21, 2021 I noticed there's brief coughing noise coming from the exhaust or engine, I've attached some recording, it's not obvious, but you can hear it twice in the recording, once at beginning once at the end. Is this something I need to worry about? Tried to rev the engine but the cough neither increase in volume nor in frequency. Untitled1.m4a Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 Vacuum leak ? Anything happening to the revs when it occurs ? Quote Link to comment Share on other sites More sharing options...
swang Posted December 21, 2021 Author Report Share Posted December 21, 2021 No the revs doesn’t move when this occurs, what is a vacuum leak? Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 (edited) Well I'll be honest and say it's a speculative guess re the noise, which I couldn't make out too well. A fellow forum member does a pretty good job explaining what one is but it's a guess on my part... and probably wrong if the revs are consistent. Can you make the noise happen with the car stationary, with another set of ears on it to help you work out where it's coming from ? Get it on a code reader as well and see if any errors are being thrown, might give some pointers. Edited December 21, 2021 by iborguk Quote Link to comment Share on other sites More sharing options...
swang Posted December 21, 2021 Author Report Share Posted December 21, 2021 Just listened to it again, I think the noise only occurs when the rev crosses 1000 RPM, sometimes it happens when rev drops from above 1000 to below, I added another recording, you can hear the noise at seconds 2, 6,7, 9. I googled a bit and for vacuum I think the noise should be persistent? BTW, my idle is like 950 RPM, is that normal for the 2.7L engine? 5.m4a Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 Tagging @TROOPER88 - any thoughts ? Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 What state is the exhaust in ? Quote Link to comment Share on other sites More sharing options...
swang Posted December 21, 2021 Author Report Share Posted December 21, 2021 2 minutes ago, iborguk said: What state is the exhaust in ? hm...good? honestly I don't know, I recently bought it from a very reputable specialist with a service carried out. Other than the noise I can't see or feel anything wrong with the car, but this is my first boxster so I have nothing to compare with. Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 2 minutes ago, swang said: hm...good? honestly I don't know, I recently bought it from a very reputable specialist with a service carried out. Other than the noise I can't see or feel anything wrong with the car, but this is my first boxster so I have nothing to compare with. Have a conversation with the specialist ? Quote Link to comment Share on other sites More sharing options...
swang Posted December 21, 2021 Author Report Share Posted December 21, 2021 they are a bit far, guess I'll have to find a local specialists to give it a look/hear Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 1 minute ago, swang said: they are a bit far, guess I'll have to find a local specialists to give it a look/hear Still maybe worth a convo, especially if you've only recently bought the car from them. Quote Link to comment Share on other sites More sharing options...
iborguk Posted December 21, 2021 Report Share Posted December 21, 2021 Maybe also update your profile with a location, will help short-cut re recommendations re help etc. Quote Link to comment Share on other sites More sharing options...
swang Posted December 21, 2021 Author Report Share Posted December 21, 2021 1 minute ago, iborguk said: Still maybe worth a convo, especially if you've only recently bought the car from them. ya, I'll give them a call, I do have a 1yr warranty on this so I can probably fix it elsewhere if it's proven to be a problem. Quote Link to comment Share on other sites More sharing options...
the baron Posted December 21, 2021 Report Share Posted December 21, 2021 Sounds like a swarm of flies to me, so I’m absolutely no help at all. Quote Link to comment Share on other sites More sharing options...
TROOPER88 Posted December 21, 2021 Report Share Posted December 21, 2021 2 hours ago, iborguk said: Tagging @TROOPER88 - any thoughts ? Upload to poor quality. Bring it to me and I will tell you what the issue is if you are local to Surrey Paul 1 Quote Link to comment Share on other sites More sharing options...
Andy Mac Posted December 21, 2021 Report Share Posted December 21, 2021 Hi @swang as @iborguk suggests I’d be taking that back to the dealer / regardless of distance - or getting them to collect. Can’t add any value by listening other than to say it certainly isn’t right. Quote Link to comment Share on other sites More sharing options...
S8ked Posted December 22, 2021 Report Share Posted December 22, 2021 Difficult to tell from that short recording, but I had a similar odd sound in the same RPM range. I discovered the right side catalytic converter was coming apart internally. Quote Link to comment Share on other sites More sharing options...
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