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      07-30-2015, 02:49 AM   #39
Dackelone
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Drives: N54 e82
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Location: Bayern, Germany

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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?

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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.

Dackel
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