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Discussion Starter #1
So, out and about in the Mini this week and looking at the digital screen I suddenly see a yellow/orange half colour in engine fault image appear. Car in 'SPORT' mode and was running absolutely fine and pulling cleanly at the time the warning appeared. O/H consults manual and reads that the car is OK to drive, just not with too heavy a foot!

Took it down to local, trusted Inde at lunchtime to read the fault codes and shows:

1.2D52 DME: Super knocking
2.2DCD DME: Fuel shutoff due to superknocking, cyl 3
3.2885 DME: Boost-pressure control deviation, plausibility

Car background: low mileage (44k) FJCW bought from Mini dealer - had a problem 2 years ago where MINI replaced piston rings, changed cam chain & tensioner and completely rebuilt the head with new parts - the PARTS bill alone was c. £3.5k! Thankfully all done under warranty. At the time I asked about walnut blasting, but was told the valves were clean enough, so didn't warrant it. Since that work was done 2 years ago the car has only covered c. 9k miles and oil/filter changed annually, and is always driven carefully from cold etc so it is looked after.

So the big question is any idea what this could be? I wondered if it could a coil pack on cylinder 3 that is on the way out?

Any thoughts or advice most welcome!
Oh, and if it does require walnut blasting, can you recommend any companies close to Newbury, Berks please? I've read that TWG in Camberley are very good - is that still the case?
Thanks!
 

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Jordan - thanks for your response ... I think!!! :eek:

Could you provide a bit more info please - what was the specific cause?
My engine has had a full top end rebuild plus new piston rings and cam chain/tensioner all fitted by local MINI dealership, so you'd hope they'd down a good job. They also said at the time that the ports were looking OK and didn't need blasting (that was about 12k miles ago). The engine is treated well - quality oil & filter changes annually and it is always warmed & cooled down properly. Surely a modern engine cannot be this weak?!!

Did your car lead a hard life and was it standard or modified?

Thanks (y)
 

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Make sure the timing is correct. When I rebuilt my engine it was slightly off on timing and resulted in superknock. I reset the timing and it went away.

Worth a try....


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Jordan - thanks for your response ... I think!!! :eek:

Could you provide a bit more info please - what was the specific cause?
My engine has had a full top end rebuild plus new piston rings and cam chain/tensioner all fitted by local MINI dealership, so you'd hope they'd down a good job. They also said at the time that the ports were looking OK and didn't need blasting (that was about 12k miles ago). The engine is treated well - quality oil & filter changes annually and it is always warmed & cooled down properly. Surely a modern engine cannot be this weak?!!

Did your car lead a hard life and was it standard or modified?

Thanks (y)
I had the same treatment. First blown piston was done by mini. Skimmed. New piston, rings etc. All under warranty.

Second time I paid a local specialist. But it was a different piston this time.

My car was standard. 2008 N14 Cooper S. 27k miles until the first blown piston. Around 54k to the next blown one.

Car didn’t have a hard life. Serviced regularly.
There was no warning driving as you do and literally started running like a bag of spanners. Got it looked at on a code reader and had super knock.
I even recorded the sound of the engine and stick it on YouTube. Sounded like a tractor.


I paid around £2500 for my car to be sorted properly the second time. But soon as it was finished I traded in for a newer 2012 model.
N18 engine. No issues.

I still have my piston at home.


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