Misfire symptoms - but not a misfire! - MINI Cooper Forum
Go Back   MINI Cooper Forum > Model Specific MINI Forums > MINI Cooper > First Generation MINI Cooper


First Generation MINI Cooper MINI Cooper from 2001 - 2006

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old Feb 13th, 2014, 04:49 PM
MINI2 Newbie
Offline
 
Join Date: Jan 2012
Posts: 3
Local Time: 11:56 PM
England
Misfire symptoms - but not a misfire!

My girlfriend has an '02 plate Mini Cooper which for the past two months or so has developed what has all the hallmarks of a misfire: hesitant under load, no power under about 3000 rpm until it eventually seems to catch and then pulls strongly, engine 'flutters' occasionally when driving at a constant speed etc.

So based on that she had the spark plugs replaced, no change. She had the coil packs replaced, no change. Plugging it into diagnostics has revealed no fault codes, so at the moment we're all stumped - including the garage!

Is this a common problem? At the moment I'm fearing all sorts: faulty injector, compression problems or god knows what! Can anyone shed any light?

It seems to be an intermittent problem too, sometimes it's terrible but other times the car drives absolutely fine and trouble free! It also seems worse when going uphill: whether this indicates a fuel supply problem or is just a symptom of it being under load I don't know....

All help greatfully received!
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old Feb 13th, 2014, 07:50 PM
MINI2 Master
Offline
 
Join Date: Feb 2011
Location: South london
Posts: 1,190
Local Time: 11:56 PM
United Kingdom Male
Hi ya

Get the fuel pressure and flow checked you may find if the fuel filter has never been replaced and it is on it's last legs. my one was bad when I changed it. Get the kit from mini don't use aftermarket one.

This is a how to guide

http://www.northamericanmotoring.com...hange-mcs.html

Also drive the car driven with the diagnostic machine connected and check out the map sensor, O2 sensor and knock sensor checked and do a diagnostic snap shot as you drive it. Then you will be able to narrow it down

Also Check you vacum pipe to your fuel pressure regulator

You may have a bad sensor or injector that is not 100% correct but not throwing a code.

Get a leak down check carried out that will tell you if you have a bad valve or rings, it's quite quick and easy to do.


Hope this helps
Reply With Quote
  #3 (permalink)  
Old Feb 14th, 2014, 02:39 PM
MINI2 Newbie
Offline
 
Join Date: Jan 2012
Posts: 3
Local Time: 11:56 PM
England
Great stuff, thanks for the tips. Fuel filter is a good shout - hadn't thought about that. Fingers crossed!
Reply With Quote
  #4 (permalink)  
Old Mar 11th, 2014, 10:25 PM
MINI2 Newbie
Offline
 
Join Date: Jan 2012
Posts: 3
Local Time: 11:56 PM
England
Turns out she needed a new catalytic converter!
Reply With Quote
  #5 (permalink)  
Old May 6th, 2014, 03:03 AM
MINI2 Newbie
Offline
 
Join Date: May 2014
Location: Gods blind spot,Ohio
Posts: 48
Local Time: 10:56 PM
United States Male
Nice I had the same issue with my 05 r53, turns out the inlet tube was broken off of the eaton.
Reply With Quote
  #6 (permalink)  
Old May 7th, 2014, 08:33 PM
MINI2 Newbie
Offline
 
Join Date: May 2014
Posts: 2
Local Time: 11:56 PM
United Kingdom
02 cooper HELPPPPPPPP

My mum has a cooper for 7 years and have spent a fortune on it, the car has started to display a amber engine warning light and it looks like a one of the fuel injectors is playing up. She's Tempted to sell too we buy any car for 1800 quid but want to advise if its a costly job or not. we love the car but its only done 6000 in the last years 7 years, which works out to be a very expensive car to run , any advise will be great. My mum lives in NW9 London.
Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

» Recent Threads
Tow Hitch for '13 Roadster
Feb 17th, 2014 05:56 AM
Last post by dalboyne
Today 10:18 PM
19 Replies, 2,938 Views
What type of person drives a MCS
Oct 27th, 2006 02:14 PM
by popey
Last post by The Nun
Today 07:35 PM
83 Replies, 4,349 Views
Times, they are a changing, or not.
Oct 29th, 2014 11:02 AM
Last post by The Nun
Today 07:32 PM
2 Replies, 244 Views
mini one 2008 cigarette lighter fuse?!
Today 12:12 PM
Last post by The Nun
Today 07:18 PM
1 Replies, 132 Views
F56 how to get constant power from passenger side fuse box
Today 12:18 AM
Last post by The Nun
Today 07:13 PM
1 Replies, 200 Views
The Importance of Winter Wiper Blades and Glass Treatment
Today 12:32 PM
by CARiD
Last post by The Nun
Today 07:11 PM
1 Replies, 138 Views
Thinking about another Mini
Today 11:56 AM
by ZR 900
Last post by The Nun
Today 07:10 PM
1 Replies, 167 Views
R53 Intermittent starting issue and ticking
Today 06:53 PM
Last post by liquidsk8s
Today 07:06 PM
1 Replies, 95 Views
R56 transmission problems
Today 04:18 PM
Last post by The Nun
Today 06:58 PM
2 Replies, 95 Views
2015 Countryman
Yesterday 09:15 PM
Last post by The Nun
Today 06:12 PM
3 Replies, 258 Views
Advice on labour charge for fast fix....
Today 10:48 AM
Last post by The Nun
Today 06:08 PM
6 Replies, 202 Views
How can I remove the bonnet lining?
Today 12:26 PM
by gnjames
Last post by The Nun
Today 05:58 PM
3 Replies, 153 Views
Thinking about buying a 09 Mini Cooper S
Today 05:16 AM
by JNH2358
Last post by Caveman
Today 04:37 PM
1 Replies, 239 Views
bolt on bhp
Yesterday 04:08 PM
Last post by Caveman
Today 04:29 PM
4 Replies, 341 Views
Issue with mini 2005 convertible roof
Oct 29th, 2014 03:16 PM
by boppu
Last post by burnstar
Today 05:12 AM
5 Replies, 500 Views
IMPORTANT. Have you had a power steering pump failure? Please vote YES or NO!!!
Jan 22nd, 2004 11:45 AM
by waynef
Last post by jowev
Yesterday 10:28 PM
1,112 Replies, 338,103 Views
Fitting a Bugaboo in a Mini Cooper 2011
Yesterday 02:37 PM
Last post by nidawaseem
Yesterday 02:37 PM
0 Replies, 240 Views
New comer with some questions..
Oct 29th, 2014 01:31 AM
by mcoop
Last post by davidscott
Yesterday 11:47 AM
3 Replies, 432 Views
H7r vs factory xenon
Yesterday 10:59 AM
by Nickgo
Last post by Nickgo
Yesterday 10:59 AM
0 Replies, 181 Views
Central locking problem Locks then unlocks straight away
Oct 29th, 2014 02:45 PM
by Skitos
Last post by heathwebbo
Yesterday 07:12 AM
2 Replies, 294 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 10:56 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2