Overhaul or not to

[Volvos525i]

U mean the valve seal?. 16 unit right. Need to do top overhaul to change it right?

If the white smoke color once in a while then it might be ur valve seal...
To replace valve seal only not need to remove the cylinder head can perform by using special tools after removing the cylinder cover and cam shaft assembly remove the valve spring after removing the valve spring split lock can remove the valve seal by each cylinder firing order...

 

[Alex5522]

Another good write up for you to read and it was posting before on other thread : http://www.pelicanparts.com/bmw/techarticles/Borrowed/mult_engine_rebuild-1.htm

 

[krsna86]

Pls. Where is the workshop?

It's in Johor Jaya, Jalan Seroja area. Shop is called Borneo Star. Person to contact is Mike : 0167106005. You can say Krish E46 325 3388 referred.

Good luck bro.