7 replies to this topic

[joeyb]

Hi everyone, bit of a newbie on here but after some help!!!

 

My Mrs has a 2007 mini cooper s, and the other day it started missfiring and hesitating. Codes came up with cylinder #4 misfire, so i've changed the coil pack and the spark plugs and still no joy.

 

Could this be an injector or the high pressure fuel pump?

 

Any help greatly apreciated thanks Joe.

[kyle9832]

Dont think it will be the fuel pump mate, had this problem when working on a bmw, coils and spark plug replaced and all it turned out to be for me was that i hadnt pushed the coil pack in all the way, try taking cyl 3's coil pack off and swapping with 4 and see if the code changes to cylinder 3 misfire, if so you either have a faulty coil or spark plug, if it does not change i would be leaning more towards fuel related, i.e injector, i doubt it would be the fuel pump as you would then have a problem with all 4 mis fiering or lack of fuel...
Thats all i can think of for now! :) and welcome to the forum, this forum is mainly for classic minis but you will find people will be more than willing to give you some advice! ;)

Edited by kyle9832, 27 August 2015 - 08:14 PM.

[cal844]

Dont think it will be the fuel pump mate, had this problem when working on a bmw, coils and spark plug replaced and all it turned out to be for me was that i hadnt pushed the coil pack in all the way, try taking cyl 3's coil pack off and swapping with 4 and see if the code changes to cylinder 3 misfire, if so you either have a faulty coil or spark plug, if it does not change i would be leaning more towards fuel related, i.e injector, i doubt it would be the fuel pump as you would then have a problem with all 4 mis fiering or lack of fuel...
Thats all i can think of for now! :) and welcome to the forum, this forum is mainly for classic minis but you will find people will be more than willing to give you some advice! ;)

Change the spark plugs then check the codes again(erase then read.. Then run the car then finally check codes a 2nd time)

Hth

[joeyb]

Yeah i figured it was more classics when i started reading some of the forums

 

Thanks for the advice pal, I will give it a try tommorow and see how i get on

 

Cheers :)

[OhDear]

there is another site for new minis...www.mini2. com but we are more friendly )) we brake down more so need help pushing

[FlyingScot]

Moved to Motormouth section for non minis.
This is a forum only for classic minis, totalmini and mini2 sites have much more info for the BMW product

FS

[mab01uk]

Link to TotalMINI.com below,

2006-2014, 2nd Gen Faults & Fixes:-

http://www.totalmini...2nd-generation/

[rusty30]

Sounds like the crank shaft sensor - had the same problem on my bini