Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
991 : 2011- 17
997 : 2004- 65
996 : 1997-2005 30
993 : 1993-1998 3
964 : 1989-1993 6
Carrera 3.2 : 1983-1989 2
Carrera SC : 1977-1983 2
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 3
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 17
Cayman : 2005- 12
Cayenne : 2003- 3
Macan : 2014- 1
Panamera : 2009- 0
912-914-924-928-944-968 1
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
ghoshd
Newbie


Joined: 30 Apr 2018
Posts: 9



PostPosted: Sat Oct 27, 2018 10:40 pm    Post subject: Help: Boxster black edition making horrible noise Reply with quote

Dear members

I would like to get some advice.

When I started my 987 Boxster (black edition today) the engine was making a horrible roaring part booming part slapping part like a 100cc scooter with a blown exhaust. It follows the Rev.

Is this likely a exhaust blowout. I tried to peek underneath the car and did not see any leaks. The noise is on the right side.

Is it likely a exhaust manifold or gasket blowout.

More important questions - any kind helpful places in and around London who you recommend can take a look at this. I will also give it for a major service and brake change at the same time
 
  
View user's profile Send private message
   
HSC911
Long Beach


Joined: 23 Jul 2014
Posts: 6288
Location: Bedford


PostPosted: Sun Oct 28, 2018 2:37 am    Post subject: Re: Help: Boxster black edition making horrible noise Reply with quote

ghoshd wrote:
any kind helpful places in and around London who you recommend can take a look at this. I will also give it for a major service and brake change at the same time


Porsche Torque would be a good place to start Thumb
 
  
View user's profile Send private message
   
deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6171
Location: Brighton


PostPosted: Sun Oct 28, 2018 4:40 pm    Post subject: Reply with quote

Sounds very much like the exhaust flange ( cat to mainifold ) has let go .. not uncommon shall we say.

Something like 2 hours labour + parts to do both sides.
_________________
.

My Daughter's Crowdfunding page Here

Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
The return of Marty Wild
Barcelona


Joined: 04 Nov 2016
Posts: 1316



PostPosted: Tue Oct 30, 2018 8:39 pm    Post subject: Reply with quote

I had what Demort describes, in fact he diagnosed it very in on a Sunday morning whilst I was on the road side.

Demort, tell him where he should stick his hand in order to pinpoint if it is the exhaust flange.

I got both sides replaced with SS for a little over 200 squids IIRC.
_________________
Life's too short for cr4ppy cars, keep it German!

Cayman S 987.1
 
  
View user's profile Send private message
   
deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6171
Location: Brighton


PostPosted: Tue Oct 30, 2018 8:54 pm    Post subject: Reply with quote

The return of Marty Wild wrote:
I had what Demort describes, in fact he diagnosed it very early on a Sunday morning whilst I was on the road side.

Demort, tell him where he should stick his hand in order to pinpoint if it is the exhaust flange.

I got both sides replaced with SS for a little over 200 squids IIRC.



Lol .. post is a few days old so i think its fixed by now .. btw Sunday was np .. always glad to help no matter the time Very Happy
_________________
.

My Daughter's Crowdfunding page Here

Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
The return of Marty Wild
Barcelona


Joined: 04 Nov 2016
Posts: 1316



PostPosted: Wed Oct 31, 2018 7:39 pm    Post subject: Reply with quote

Salt of the earth.
_________________
Life's too short for cr4ppy cars, keep it German!

Cayman S 987.1
 
  
View user's profile Send private message
   
ghoshd
Newbie


Joined: 30 Apr 2018
Posts: 9



PostPosted: Sat Nov 03, 2018 1:10 am    Post subject: Reply with quote

Unfortunately it has not been fixed yet. Didn’t get time. Please could you advise how to do a quick diagnostics. I took to a garage at tower bridge (because it was next to office) and was told after a 2 minute inspection that it is the cat whic is gone. I find it strange on a 40k miles car
 
  
View user's profile Send private message
   
The return of Marty Wild
Barcelona


Joined: 04 Nov 2016
Posts: 1316



PostPosted: Sat Nov 03, 2018 6:20 am    Post subject: Reply with quote

Is that Tower Porsche or such like? My mate takes his 997 there, John is a good chap there.
_________________
Life's too short for cr4ppy cars, keep it German!

Cayman S 987.1
 
  
View user's profile Send private message
   
ghoshd
Newbie


Joined: 30 Apr 2018
Posts: 9



PostPosted: Sat Nov 03, 2018 8:05 am    Post subject: Reply with quote

[quote="The return of Marty Wild"]Is that Tower Porsche or such like? My mate takes his 997 there, John is a good chap there.[/quote]

It’s the shop next to it. Lucky motors
I always thought they are same till they handed out the card
 
  
View user's profile Send private message
   
deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6171
Location: Brighton


PostPosted: Sat Nov 03, 2018 4:54 pm    Post subject: Reply with quote

It will be the cat to mainifold flange bolts that have rotted through .. look behind the wheel for this joint ..

They will either be seperated or when running you will feel hot gasses comeing out .
_________________
.

My Daughter's Crowdfunding page Here

Mechanic

7pm - 9pm

Now At An Indy.
 



cat studs.jpg
 Description:
 Filesize:  234.61 KB
 Viewed:  1288 Time(s)

cat studs.jpg


  
View user's profile Send private message
   
The return of Marty Wild
Barcelona


Joined: 04 Nov 2016
Posts: 1316



PostPosted: Sun Nov 04, 2018 7:38 am    Post subject: Reply with quote

Demort diagnosed this very issue on my car from 100 miles away. Driver side, hideous sound, noise changes with the throttle. You can run your hand behind the wheel and feel the exhaust escaping as Demort states.

Took me 30 seconds to find the problem armed with this info.
_________________
Life's too short for cr4ppy cars, keep it German!

Cayman S 987.1
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum