I'm sure that the OCC and PCV delete help out for the most part, but you can't expect 100 percent of the oil vapor to collect in the OCC. From what I see member's pulling out of their OCC is amazing, to think that crud would have gone into the engine is amazing to say the least!

Does anybody have any idea what happens after blocking off the passenger side PCV port and using a BSH OCC on the drivers side PCV to the turbo inlet cause the oil to build up throughout the intake plumbing? I would hate to (trade on problem for another)see the oil building up throughout the intake plumbing while keeping the intake valves clean, kind of like a double sided sword.

 

'08 r56s cleaned under warranty at 14k, walnut blasted again at 33k for $800 out of warranty due to CEL and reduced power. Was told typically the injectors need cleaning at that time too for additional $$. Decided to skip that.

 

The actual amount of oil I have captured in the catch can (CC) is actually pretty small and the intent of the CC is to allow the oil vapors to slow down inside the CC to allow the oil to separate from the vapor. Due to the rear PCV suction point being "downhill" from the oil cover outlet I found that hose (since removed and blocked) to be heavily loaded with oil.

I am hoping that the front PCV discharge will have less entrained oil and that we will not see a measurable increase in oil in the intercooler etc.

 

It is for this reason I'm having second thoughts, I have both blocking caps that I purchased at the Audi dealer and the BHS OCC. I'm ready to install but find myself pausing until it's known if there is any oil building up in the drivers side PCV leading to the turbo inlet. I don't want to find oil in the intercooler later on because if the intercooler has oil in it then so does the entire intake plumbing.

The question is does the OCC trap all of the oil vapor that is redirected to the turbo inlet? If not than the oil vapor will coat the intercooler and all of the intake tract, I'd be trading one problem for another. So who wants to be the one to find out whether or not there's oil in the intercooler?

 

Bought it used less than 2 weeks ago, started to misfire a week after i got it and took to mini. Said around $500 to blast with walnut shells, covered through my extended warranty through Pence Nissan.

 

What would be the symptoms of a carbon build up problem? My car runs lousy after 44,000 miles and the dealer is telling me to stop using cheap gas....I hate driving it !

 

My CEL came on again last week and it's the same problem. Third time in 3 years. My car is an 09 and this has happened in 2010, 2011 and now 2013. I didn't get the extended warranty but one guy at Stevens creek says he hasn't found any warranties that cover this carbon cleaning. :-[

 

The S has a lot of power and that tends to mask the carbon buildup problem. Depending on how sensitive you are to engine smoothness and throttle response you may notice engine being less responsive and a fall off in power. I noted that part throttle acceleration was less crisp and engine did not take throttle smoothly. I noted slight bucking under light acceleration. Engine ran like new after cleaning.

I cleaned my valves at 33k miles. I never had misfiring or engine codes. I read in an Audi post that one guy ran a dyno test before and after walnut blasting and saw a 40 HP increase! This problem is common with direct injection engines - not just MINIs.

 

I'm noticing a bit of this especially since installing and loading the AP
Not sure if its the AP or what's being mentioned in this thread.

My vehicle is still under warranty,....any recommendation on how to get my dealer to check it out and possibly clean it out?

 

Got mine "cleaned" by crown mini yesterday go figure it ran smooth on the way home but started having the same troubles having the car turn over and not stall out and went out this morning and it turns over and then sputters out and stalls 6 times before it finally will not stall but it shakes the car quite bad and makes the revs fluctuate trying to keep it from stalling. Also was not covered in warranty and paid $500 to clean cylinder heads and fuel injectors.

 

09 MCS Carbon buildup problem noted at 30+K. Dealer agreed to cover since this was after warranty period but had a history of timing chain replacement earlier. Car has 45K now, should I start to Sea Foam the engine. Can someone post or direct me on how-to? Thanks.

 

use a catch can if your breather system is not broke(if it is you will have big problems)read this it will solve everything
https://www.northamericanmotoring.co...-and-more.html

 

This is insane. Mini needs to do something.

 

Is this ever a problem with non s models. Mine is a 2008 mini. Less responsive than ever....44,000 miles only use premium gas but the dealer told me I use bad premium gas..Hess ...should use shell or Sunoco and there s nothing wrong with the car.

 

if your in the philly area HELIX has the best deal going. Eric and his shop are very good at working on these cars. Prolly don't get much better to behonest.

 

The mileage on my 2008 MINI turned 70k before I walnut blasted the carbon build up for the first time. I ran it mostly short distances for the first 16k miles as I worked close to home. I since changed jobs and my daily commute is now 60 miles. My opinion, for what little it's worth, is that short runs contribute more to the problem as the engine doesn't get fully warmed up.

I used a remote camera to inspect the intake before starting the walnut blasting and it was so bad I could hardly see the intake valves. I followed the instructions in the "How To" section and things went pretty well. I found it was a lot of work but, with the remote camera, I can see that things cleaned up pretty well. I have power and responsiveness back that's been missing for a long time.

I strongly recommend the walnut blasting. My biggest regret is waiting so long to do it!

 

I have a couple extra BMW extraction adapters. PM me if you want one. $70 plus $5 shipping

 

https://www.lntstore.com/categories/...ction-Service/

Here ya go for an "S" tool cheap priced and same as BG and all others.

Make your own pressure pot and you have a system to run anything through it.

Be safe!

 

I use BG 44k and BG AIS Intake cleaner chems. Best you can get and no I don't work for them.

 

Had the increased emissions warning come on and brought it in to the dealer. They told me it was carbon build up and would cost $550.00 plus tax. That included a fuel injector cleaning as we'll and re-program.
I have a 09 clubman s with 15000 miles. I passed as I have never heard of this issue, until now.....

 

Wow I had to pay a whopping $800 dollars to have mine cleaned!

 

OK if you are in or around the Reno area I will do your with the pressure system for BG 44k for $125.00. You should replace plugs then if you hadn't already after the cleaning. Add another $60.00 for those installed plus I can do it on the weekends.

 

2010 MCS, 24k miles... car bought used, and after 9 days, the check engine light went active... dealer today stated carbon build up, and will be cleaned under warranty...

 

My 2009 MCSC is in the shop for carbon buildup right now. 62K miles. I bought it with 30K miles 21 months ago. Was in the shop at 35K miles for carbon buildup, covered under warranty. This time not covered under my third-party "mechanical failure" warranty. The dealer quoted me $500 but they are covering half of that. They are also fixing cracked strut mounts (but that is covered under my warranty).

Question: I have someone who can help me clean the carbon buildup myself, but how do you guys clear the Check Engine light? My friend has a code reader from his BMW, but when we plugged it into my car it didn't register any codes. Is the MINI reader different than the BMW? And where can I get one?

 

This more than likely has been discussed....but what are some of the symptoms to know whether to take your mini into the dealer or not?
How does one determine they have carbon build up without having a camera on hand to verify this?