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
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Model
Stock
Porsche 911
991 : 2011- 5
997 : 2004- 72
996 : 1997-2005 42
993 : 1993-1998 11
964 : 1989-1993 0
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 0
930 Turbo : 1975-1989 1
Early 911 : 1964-1977 1
Porsche Other Models
Classic : 1950-1965 1
Boxster : 1997- 13
Cayman : 2005- 16
Cayenne : 2003- 11
Macan : 2014- 1
Panamera : 2009- 0
912-914-924-928-944-968 6
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 & Body 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
NLW73
Imola


Joined: 27 May 2014
Posts: 770
Location: Yateley


PostPosted: Fri Aug 11, 2017 7:57 am    Post subject: Running rough after long trip/torrential rain Reply with quote

coming back from the fatherland Monday pm I got caught in the worst rain I have ever seen on the M20 and M25.

got the car home fine but parked up and started last night.

running lumpy and almost sounds like a plug or coil pack has gone

maybe some water in the plugs?

thoughts welcome.
_________________
996 GT3 mk2 - Guards Red
 
  
View user's profile Send private message
   
ragpicker
Sepang


Joined: 14 Apr 2013
Posts: 2963
Location: North East England


PostPosted: Fri Aug 11, 2017 8:10 am    Post subject: Reply with quote

I would wager its a cracked coil pack or two which has had some water ingress.

In fact I'd put £20 on it given the story. Any flashing lights or other info?

How old are the coil packs? When I first got my turbo a few years ago it was still on its original packs which were 10+ years old!
_________________
996 turbo - slightly modified....
986 S - usually in pieces: http://911uk.com/viewtopic.php?t=112626
 
  
View user's profile Send private message
   
NLW73
Imola


Joined: 27 May 2014
Posts: 770
Location: Yateley


PostPosted: Fri Aug 11, 2017 8:36 am    Post subject: Reply with quote

no flashing lights.

coil packs are 3 years old now I hope they are not cracked as should last longer than that. is that the case or they just fail when they fail?

I have some spare ones. pain in the ass to change though!
_________________
996 GT3 mk2 - Guards Red
 
  
View user's profile Send private message
   
NXI20
Approved Trader


Joined: 02 Feb 2008
Posts: 3213
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Fri Aug 11, 2017 4:26 pm    Post subject: Reply with quote

It will just be one coil pack. If you start it for 15 secs from cold & then feel each of the headers, the cold one will be the one to change.

I change mine every 3 years proactively now as they do just fail, usually miles from home!
_________________
Nick
Need Alcon discs or Pagid pads? https://uber9s.com

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC Barn Find in Red (restoration project)
 
  
View user's profile Send private message
   
NLW73
Imola


Joined: 27 May 2014
Posts: 770
Location: Yateley


PostPosted: Fri Aug 11, 2017 7:21 pm    Post subject: Reply with quote

ok thanks nick

any special tools needed to get the spark plugs out if needed?
_________________
996 GT3 mk2 - Guards Red
 
  
View user's profile Send private message
   
kas750
Paul Ricard


Joined: 31 Mar 2013
Posts: 3203
Location: lancashire

2006 Porsche 911

PostPosted: Fri Aug 11, 2017 8:38 pm    Post subject: Reply with quote

I jet washed my boxster this afternoon and that's miss firing now and has thrown a CEL Rolling Eyes
 
  
View user's profile Send private message
   
NXI20
Approved Trader


Joined: 02 Feb 2008
Posts: 3213
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Fri Aug 11, 2017 8:46 pm    Post subject: Reply with quote

NLW73 wrote:
ok thanks nick

any special tools needed to get the spark plugs out if needed?


Nothing special for the plugs (although I would leave them alone if they don't need changing; it's a 4 year / 48K job). Coil packs are held in by 2 hex bolts each behind the heat sheild but getting access can be a bit of a chore depending on what exhaust system you have. My M+M system allows easy access so I can change all 6 in under 30 mins on my drive.
_________________
Nick
Need Alcon discs or Pagid pads? https://uber9s.com

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC Barn Find in Red (restoration project)
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 11 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