Diesel Smoke Reduction - A Cure??

[Roverron]

Check out MGoracle's thread on the .org forum.

It could be the reason why some diesels smoke more than other when tuned.

Certainly sounds like it could be another small but effective tweak!

http://forums.mg-rover.org/showthrea...39#post1759939


Ron

[Keith]

Oooooooo thanks Ron that is one to investigate

[M47Rman]

Originally Posted by Roverron

Check out MGoracle's thread on the .org forum.

It could be the reason why some diesels smoke more than other when tuned.

Certainly sounds like it could be another small but effective tweak!

http://forums.mg-rover.org/showthrea...39#post1759939


Ron

It is all in the dim and distant past now, but the parts which you are referring to, I think are the positive crankcase ventilation valve (PCV) and the breather filter. As far as I can remember, you should have both. One is a plastic valve, the other is a woolen type filter. Both are an integral part of the engine breather system, and their job is to remove oil entrained in the engine breather gases, and return it to the sump. If memory serves me correct, there is a drain leg down through the head and block, to return the oil to the sump. Changing the woolen type filter could improve the engines breather system performance, particularly on high mileage engines, but the PCV valve normally only needs changing if it is faulty. We did on occasions change the woolen filter on test bed engines, although I don't ever recall doing the same on any in vehicle engines. If the breather system is not removing the oil effectively, then clearly your tailpipe emissions will increase, due to the burning off of the oil.:lol:
Andy

[pondweed]

so is it this bit?
(formerly STC4733A)
LLJ000060
Valve assembly-depression control
£33 quid-odd

would it be possible to get the woollen filter separately.. nothing seemingly listed?

[M47Rman]

Originally Posted by pondweed

so is it this bit?
(formerly STC4733A)
LLJ000060
Valve assembly-depression control
£33 quid-odd

would it be possible to get the woollen filter separately.. nothing seemingly listed?

The woolen filters certainly came to us seperately, but that was direct from BMW. Trouble is, I don't think BMW list it as a service item, so not sure how you would go about getting one. Valve assembly - depression control sounds about right for a BMW description of the item. They always did like saying things in a roundabout way!
Andy

[pondweed]

I should have clarified that the part number/price above is from the Xpart MGR list...

[M47Rman]

Originally Posted by pondweed

I should have clarified that the part number/price above is from the Xpart MGR list...

Undoubtedly, but all the part descriptions given to Rover service department, and other publication departments, were supplied by Rovers Diesel department, and were in turn given to us direct from ..........BMW.