Blue smoke on extended idle. 2006 4.8is.

[TerminatorX5]

here is some info i found in WDS:

Idle speed control




The idle speed control valve is designed as a non-wearing two-winding rotary actuator. The rotary slide valve in the idle speed control valve may only be tested by way of activation via a tester or by shaking. Moving the rotary slide valve with the finger or with a tool such as a screwdriver is not permitted. This would mean that the rotary slide valve would no longer function correctly.
The idle speed control valve is now responsible for several tasks and is therefore an important component in the intake air tract of the engine.
Small air leaks which may occur, for example, at leaking gaiters/cylinders or in the event of a varying gap in the throttle valve can be compensated up to a certain extent by the idle speed control valve.
The idle speed control valve opens a little more during the engine coasting phase and closes just before reaching idle speed. This prevents a high intake pipe vacuum and blue smoke emission (oil vapour via valve stem seals).
During engine start, the idle speed control valve enables an opening cross section that is above that of idle speed. This ensures the engine starts more efficiently.
The idle speed control valve features an emergency operation opening gap which ensures certain emergency running functions in the event of power failure.

[TerminatorX5]

Originally Posted by TerminatorX5

here is some info i found in WDS:

Idle speed control




The idle speed control valve is designed as a non-wearing two-winding rotary actuator. The rotary slide valve in the idle speed control valve may only be tested by way of activation via a tester or by shaking. Moving the rotary slide valve with the finger or with a tool such as a screwdriver is not permitted. This would mean that the rotary slide valve would no longer function correctly.
The idle speed control valve is now responsible for several tasks and is therefore an important component in the intake air tract of the engine.
Small air leaks which may occur, for example, at leaking gaiters/cylinders or in the event of a varying gap in the throttle valve can be compensated up to a certain extent by the idle speed control valve.
The idle speed control valve opens a little more during the engine coasting phase and closes just before reaching idle speed. This prevents a high intake pipe vacuum and blue smoke emission (oil vapour via valve stem seals).
During engine start, the idle speed control valve enables an opening cross section that is above that of idle speed. This ensures the engine starts more efficiently.
The idle speed control valve features an emergency operation opening gap which ensures certain emergency running functions in the event of power failure.

I found this in the WDS, which clearly indicates that the manufacturer is aware of the blue smoke issue...

my question is - could it be that the blue smoke issue could be aleviated with a slight increase in the idle speed??? this perhaps could be achieved via programming?

[A B Able Truck]

Originally Posted by TerminatorX5

I found this in the WDS, which clearly indicates that the manufacturer is aware of the blue smoke issue...
my question is - could it be that the blue smoke issue could be aleviated with a slight increase in the idle speed??? this perhaps could be achieved via programming?

What's WDS ?

[TerminatorX5]

Originally Posted by A B Able Truck

What's WDS ?

wiring diagrams for the cars

WDS BMW Wiring Diagram System - X5 E53

you need java and ability to read SVG diagrams - SVG is an extension by Adobe...

[SlickGT1]

Originally Posted by TerminatorX5

I found this in the WDS, which clearly indicates that the manufacturer is aware of the blue smoke issue...

my question is - could it be that the blue smoke issue could be aleviated with a slight increase in the idle speed??? this perhaps could be achieved via programming?

wow you been busy. Nice find non the less.

[JCL]

WDS wiring diagrams are posted on this site, under the online references tab. E53 and E83.