MCS 07 Problems, are they linked?

[al_bey]

Hi everyone,

Fairly new to posting on here but I am doing this for a friend.

He is having a couple of issues with his 07 Plate Mini Cooper S.

The problems are described as follows;

Problem 1:

When the car is started from cold, it sounds like a diesel engine and is very noisy. After about 10mins this goes away. It has got progressively worse (louder) as the weeks have gone on.

Problem 2:

When driving the car, as soon as the car hits 4300rpm it dies when accelerating. It’s like it loses all power as soon as it gets to this point. No engine management lights come on or any other warning lights. It does this in every gear. This randomly started one day and does it all the time now.

He took it to the dealers and they couldn’t find the problem in a day, they asked to keep it longer but couldn’t as he needed it.

Can anyone shed any light or suggest what these might be? Do you think they are related?

[MiniDeLux]

Has the car ever had the timing chain tensioner inspected? If not, look up "cold start death rattle".

It is important that he stop driving the car and have the dealership look at it. The problem I think you are having is well-documented.

Quote: Originally Posted by al_bey (original)

Hi everyone,

Fairly new to posting on here but I am doing this for a friend.

He is having a couple of issues with his 07 Plate Mini Cooper S.

The problems are described as follows;

Problem 1:

When the car is started from cold, it sounds like a diesel engine and is very noisy. After about 10mins this goes away. It has got progressively worse (louder) as the weeks have gone on.

Problem 2:

When driving the car, as soon as the car hits 4300rpm it dies when accelerating. It’s like it loses all power as soon as it gets to this point. No engine management lights come on or any other warning lights. It does this in every gear. This randomly started one day and does it all the time now.

He took it to the dealers and they couldn’t find the problem in a day, they asked to keep it longer but couldn’t as he needed it.

Can anyone shed any light or suggest what these might be? Do you think they are related?

[S8RAH]

They probably are linked in as much as many R56 S owners have experienced these symptoms. At a guess he has the death rattle and a seriously coked up top end. I'd hazard a mileage of about 35-43k but there are a lot whose MINI has suffered outside this range. Sorry, just hope I'm wrong.

[Macguyvic]

i had my 08 MCS go in for a rough start that did sound like a diesel & the check engine light came on. I never let it go for 10 minutes. I would turn off the car start it again and it was ok, but I took it in due to the check engine light.The Mini dealer said it was all carboned up so they took care of that. The next day it did it again. Took it back and they said fuel injectors needed to be changed and go ahead and replace the spark plugs. Two days later it did it again. This time I went in a bit upset. This time they determined it was the high pressure fuel pump. Since replacing the fuel pump I have had no more issues.

[al_bey]

Thanks for your replies everyone.

It seems that it's not clear cut at all. I have read about the carbon build up and this seems like it could be a possiblity.

How hard is the timing tensioner to change? I have done a fair bit of work on cars over the years and i am willing to help my friend change this.

Are there any do it yourself methods for the carbon clean out?

[Interceptor]

You describe exactly the problems I had when I recently bought my 2007 MCS

Timing chain tensioner was changed before I received the car, car continued to rattle terribly and lose lots of power and practically cough it's way down the road.

I had the engine de-coked and 2 new hoses put on the turbo and the problem has gone. My mileage is 44k but luckily this work is covered under warranty

[HPD Motorsport]

Had any one foind the solution to this???
I have been dealing with the same problem.
Does any one know wich sensor is the Bypass Valve Control? (Code P0034)

Thanks in advance,