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  #11  
Old 10-31-2023, 01:24 PM
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Hi danny_acs, I am experiencing this on my 05 4.8is with roughly the same mileage (135k) what exactly did CPC Performance Engineering adjust with the eccentric valve shaft motor? or did they just replace it?
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  #12  
Old 11-06-2023, 02:59 PM
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Quote:
Originally Posted by YETTI View Post
Hi danny_acs, I am experiencing this on my 05 4.8is with roughly the same mileage (135k) what exactly did CPC Performance Engineering adjust with the eccentric valve shaft motor? or did they just replace it?
Hi YETTI, they said that they were able to adjust it, but also said that if it happens again, it will need replacing.

Three years on, it has been ok, HOWEVER, recently noticed a similar knocking sound when pressing the accelerator sharply. So when I step on it, 2-3 knocks and then the RPM's jump.. I guess I'll have to visit them again..
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  #13  
Old 11-07-2023, 03:22 PM
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Quote:
Originally Posted by danny_acs View Post
Hi YETTI, they said that they were able to adjust it, but also said that if it happens again, it will need replacing.

Three years on, it has been ok, HOWEVER, recently noticed a similar knocking sound when pressing the accelerator sharply. So when I step on it, 2-3 knocks and then the RPM's jump.. I guess I'll have to visit them again..
Do you know exactly what they did to adjust it? I was trying to find out more about the adjustments to try and make them on my car, but cant seem to find what exactly to adjust. Any help is appreciated
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  #14  
Old 11-14-2023, 05:17 AM
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Hey Yetti, sorry for the late reply (I don't check often), but I don't really know to be honest. They only charge a couple of hours labour if I recall correctly. I can try to find out. A good independent BMW garage should know it, and it doesn't take long at all like I said. Do you plan to do it yourself though?
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