How To Carbon Build-Up Cleaning - The right way...

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  #151  
Old 04-08-2018, 11:50 PM
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Thanks everyone for their help, here is the result of walnut + motul carb cleaner contact sprey. If your compressor is any less than 50litre 10bar, make sure you have a carb cleaner in your hand.
 
  #152  
Old 04-11-2018, 11:12 PM
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Update: This is a must to every mini! All the hidden ponnys came alive. Worth each single bit of money and time spent.

Now a question: Do we have to put 2 oil catch cans or 1 will prevent or at least hold on a while?
 
  #153  
Old 04-12-2018, 03:10 AM
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Originally Posted by fasfury
Update: This is a must to every mini! All the hidden ponnys came alive. Worth each single bit of money and time spent.

Now a question: Do we have to put 2 oil catch cans or 1 will prevent or at least hold on a while?
From what I’ve seen, only one is really needed on the N14 engine - fit the catch can into the rear left side PCV hose that leads to the intake manifold.
 
  #154  
Old 04-12-2018, 07:07 AM
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Eight years ago, I blocked off the rear PCV hose and put an oil catch can on the PCV hose to the turbocharger. Now there is no way for the oil mist from the crank case to reach the backs of the intake valves and cook there. I have had no problems with this set up.
 
  #155  
Old 08-21-2018, 09:18 AM
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This is only necessary for Cooper S and not a Justa, is that correct?
 
  #156  
Old 08-21-2018, 11:14 AM
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Originally Posted by Frixos
This is only necessary for Cooper S and not a Justa, is that correct?
That is correct.
 
  #157  
Old 09-05-2018, 09:01 AM
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Any reviews on the situation using WMI? Any photos with some mileage using WMI?

I'm 60k miles, using WMI last 20k miles. Idk if it's necessary.
 
  #158  
Old 09-05-2018, 05:01 PM
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What is WMI?
 
  #159  
Old 09-05-2018, 10:00 PM
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Originally Posted by DneprDave
What is WMI?
water meth injection
 
  #160  
Old 09-17-2018, 05:19 PM
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carbon

Originally Posted by DneprDave
Eight years ago, I blocked off the rear PCV hose and put an oil catch can on the PCV hose to the turbocharger. Now there is no way for the oil mist from the crank case to reach the backs of the intake valves and cook there. I have had no problems with this set up.
Any photos?
i need to do oil can next.
i have used Seafoam since engine rebuild engine runs great.
 
  #161  
Old 12-21-2018, 09:39 AM
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I can post some pictures with wmi kit installed 6-7k km after walnut blasting in the following weeks.
 
  #162  
Old 01-05-2020, 09:15 AM
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Decarb tutorial on an F series?

Is everyone doing decarbs on N14s only? I have 85k on my 2015 F56 and I'd like to do this. Am I missing the post and write up where someone did this on a gen 3?
 
  #163  
Old 01-05-2020, 12:49 PM
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Originally Posted by minideucecoop
Is everyone doing decarbs on N14s only? I have 85k on my 2015 F56 and I'd like to do this. Am I missing the post and write up where someone did this on a gen 3?
Carbon build up was a problem on N14 engines. I haven't seen it mentioned on N18 and newer engines.
 
  #164  
Old 01-05-2020, 12:51 PM
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A few people have posted about doing the N18, but have not heard of it on the BMW B engines at all. What makes you feel the need to decarbon?
 
  #165  
Old 10-17-2020, 04:09 AM
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Thanks for the detailed guide to valve cleaning. This has given me the confidence to take on the job.
 
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  #166  
Old 12-09-2021, 08:38 AM
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Carbon build up... Plz help...

Originally Posted by texasmontego
Update: 4-3-13.
gawannamini has put together a good write up on cleaning the valves with the Walnut Shell Method. I created these steps before the Walnut Shell method was created. If you don't mind spending about $100, you can build your own Walnut Shell Blaster (minus the compressor). Checkout his instructions in this thread: https://www.northamericanmotoring.com...ml#post3707859


This is a How-To on Removing the Carbon Build-up, the right way.

I couldn't take it anymore with the decreased performance. My car has 60K miles on it (I bought it with 50K a year ago) and I don't think the carbon build-up has ever been removed properly. The throttle was sticking, the performance was down and it just felt like the car was struggling.
I know there's a lot of people that swear by the Seafoam method, but I've run 2 bottles through my car in 4K miles and it's done nothing. I also got taken for $250 for a dealer method (while the car was in for other service) that was only a temporary fix (a few days and a warm fuzzy feeling).

So, I decided to tackle cleaning the intake ports/valves manually myself. I wasn't going to pay the dealership $$$$ without having some way of verifying it was done right and I just don't trust them. It's my car, if I want it to last, it's my responsibility.

After reading a few posts on cleaning the valves, I didn't see where anyone had done a full writeup on the procedure. I figured I would jump in and do the writeup, so others can do the maintenance, regain the lost performance and learn a thing or two about our cars.

The result? Amazing! I feel like my car runs brand new. The build-up on my car after 60K was extreme. I couldn't get a clear picture due to the location and lack of light, but trust me when I say it was extreme. After looking at it, I wasn't surprised it was running terrible. Now, the performance is back, the throttle works perfectly and it runs much smoother. I put in the BSH Oil Catch Can after I cleaned it which will definitely help reduce the buildup in the future.

Believe me when I tell you, you can do it. It's not major surgery and only takes a Saturday. I tried to lay out the steps as detailed as possible, for the inexperienced.

If you have any questions, shoot me a PM. Enjoy!
​​​​​ So, this is my first response or anything on this forum so I hope I'm doing it right. Do, I'm working on my neighbors 83 Toyota pickup 22r & I have a super stock pcv valve in guessing is carbon build up judging from the amount I found inside the thermostat housing. Is there any thing you can recommend aside from the removing the whole intake and taking an angle grinder to it? I've done that once and its not out of my realm of Mechanics, I just don't have that time frame available.... Any advice would be greatly appreciated. Thanks in advance​​​​​​
 
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