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      06-19-2012, 07:57 PM   #23
SSSnakeman
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Quote:
Originally Posted by stevenc View Post
My car got done yesterday by a local shop. $350.

I only have 45K miles and here are the before and afters.
I wish I could find it for that price especially looking at the great job they did. I attempted DIY walnut shell blasting this past Sunday but the Harbor Freight gun just clogged the entire tire. I was fully pissed off for about 5 hours and accomplished basically nothing. Now I have to go back this Sunday with a gun cleaning kit. I have 36K miles and mine are as dirty as all of the others I have seen.
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      06-19-2012, 08:50 PM   #24
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^ man that really really sux. Yeah I got lucky that the local BMW chapter had a guy who could do such a good job.
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      06-19-2012, 08:56 PM   #25
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All the more reason to join the club (for advice on service & problems) or stick with a traditional natually aspirated engine.

I wonder if cutting 1/2 the oil change interval would reduce this, certainly could not hurt.
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      06-20-2012, 12:40 AM   #26
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Can anyone chime in on having an OCC and if it will help with this, Also if they wouldn't mind explaining why or pointing me in the right direction that would be awesome!
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      06-20-2012, 10:05 AM   #27
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^ theoretically a OCC will help because the carbon build up on the intake values is the oil fumes being vented by the PCV which an OCC is supposed to capture. However i think OCC helps but does not solve the problem. In the long run you will likely need your values blasted eventually no matter what. The problem simply is that in a direct injection engine, there is no fuel flowing over the values to "wash them" and so grime will build up over time.
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      06-21-2012, 01:28 PM   #28
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I would assume running meth would also help since it would spray onto the valves.
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      06-21-2012, 01:51 PM   #29
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Heard an oil catch can and running meth can't prevent the issue.
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      04-24-2015, 02:50 PM   #30
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Quote:
Originally Posted by stevenc View Post
My car got done yesterday by a local shop. $350.

I only have 45K miles and here are the before and afters.
Sorry for digging up an old thread, but where in Houston did you get this done? I need to do this for my wife's X3, and soon, my 335.

thanks!
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      05-24-2015, 12:19 PM   #31
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This is is an easy DIY job.


Save yourselves the 400-750 dollars.
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      05-24-2015, 06:30 PM   #32
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Yeah, but you still have to buy the equipment and since this is only needed every 45 - 50K miles I'm not sure it's worth it. Unless your doing it for your friends with DI engines. I just paid $500 to get this done at a local indy shop.
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      06-18-2015, 12:44 AM   #33
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Quote:
Originally Posted by fijigabe0 View Post
Sorry for digging up an old thread, but where in Houston did you get this done? I need to do this for my wife's X3, and soon, my 335.

thanks!
ABR on Kuykendahl in Spring does a GREAT job on all things BMW. They did my blast a year or so ago... Ask for Alex, you'll be glad you did.
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      07-29-2015, 03:07 AM   #34
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Quote:
Originally Posted by Dackelone View Post
Crankcase vapors! PCV (or CCV crank case vent) is where the oil vapors come from and buildup on the hot intake valves.

Blame D.I. and long oil change intervals - hence the oil gets thinner/diluted and ends up on your intake valves.
How is this dirt related to leaky injectors(rough cold starts and missfires )?
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      07-29-2015, 04:55 AM   #35
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Quote:
Originally Posted by AnShk View Post
How is this dirt related to leaky injectors(rough cold starts and missfires )?
Dirt ? I don't understand. ???
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      07-29-2015, 02:28 PM   #36
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Quote:
Originally Posted by Dackelone View Post
Dirt ? I don't understand. ???
He's calling the carbon build up dirt. The carbon on the back of the valves has nothing to with your injectors failing. These are to separate problems. Sorry Dackelone I thought it would add Anshk's question too. The second part was directed to him.

Last edited by Coleroad; 07-29-2015 at 02:33 PM.
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      07-29-2015, 06:47 PM   #37
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Quote:
Originally Posted by Coleroad View Post
He's calling the carbon build up dirt. The carbon on the back of the valves has nothing to with your injectors failing. These are to separate problems. Sorry Dackelone I thought it would add Anshk's question too. The second part was directed to him.
thanks!

How can I know it's intake valves which are dirty and not injectors for example?

I used 3 bottles of BG 44 over 7kmiles and I think oil was too thin finally resulting in rough cold start. After oil change the starts became way better-smoother revs from 1400 rpm down to 700 without problems.
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      07-29-2015, 06:48 PM   #38
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Quote:
Originally Posted by Dackelone View Post
Dirt ? I don't understand. ???
carbon, yes
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      07-30-2015, 03:49 AM   #39
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Quote:
Originally Posted by AnShk View Post
thanks!

How can I know it's intake valves which are dirty and not injectors for example?

.
Best way to check for carbon build up is to pull off the intake manifold and have a look! IF you have a long borescope... you could also check the carbon build up on the valves without removing the manifold... but that tool costs a few hundred dollars.

You can also pull off the valve cover and check your fuel injectors part numbers. IF you have an early set... you really ought to replace them with the latest injectors from BMW.



Quote:
I used 3 bottles of BG 44 over 7kmiles and I think oil was too thin finally resulting in rough cold start. After oil change the starts became way better-smoother revs from 1400 rpm down to 700 without problems
Anytime you use a additive to the fuel system.... you should change your oil. That stuff with thin out your oil and could lead to engine damage. So its good you changed your oil.

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      07-30-2015, 12:21 PM   #40
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Quote:
Originally Posted by Dackelone View Post

Anytime you use a additive to the fuel system.... you should change your oil. That stuff with thin out your oil and could lead to engine damage. So its good you changed your oil.

Dackel
this guy http://www.danmartinsautoservice.com/
changed plugs and coils + made an oil change. Next day I came to him with the same missfires and he gave me 3 bottles of BG44 expecting it might help, but never mentioned about oil change. Finally, after I realize he does not know about N54problems I went to other shop and they cleaned intake and changed 3 injectors to new ones. But still I made 7kmiles with bad oil!
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      07-31-2015, 10:57 AM   #41
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Quote:
Originally Posted by AnShk View Post
this guy http://www.danmartinsautoservice.com/
changed plugs and coils + made an oil change. Next day I came to him with the same missfires and he gave me 3 bottles of BG44 expecting it might help, but never mentioned about oil change. Finally, after I realize he does not know about N54problems I went to other shop and they cleaned intake and changed 3 injectors to new ones. But still I made 7kmiles with bad oil!


http://www.amazon.com/forum/-/Tx34OZ...sin=B00DDVU6EI
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      07-31-2015, 05:20 PM   #42
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Quote:
Originally Posted by tuphdc View Post
^^Yea... when using ONE car of BG 44K(or any other fuel injector cleaner for that matter). But he used THREE cans!! I would change the oil. Its really a moot point now. Just for future info.
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