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18th December 2006, 09:48 | #1 |
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Diesel Smoke Reduction - A Cure??
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
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18th December 2006, 10:52 | #2 |
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Oooooooo thanks Ron that is one to investigate
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18th December 2006, 10:59 | #3 | |
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Quote:
Andy
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18th December 2006, 11:40 | #4 |
This is my second home
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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? |
18th December 2006, 12:35 | #5 | |
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Quote:
Andy
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18th December 2006, 16:26 | #6 |
This is my second home
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I should have clarified that the part number/price above is from the Xpart MGR list...
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18th December 2006, 17:42 | #7 |
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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.
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18th December 2006, 19:15 | #8 |
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What sort of stripdown is required to this.....I looked at this valve a few months ago, I thought I saw some strange headed bolts (male torx) that I couldn't undo...........Could explain my oily smokey smell when ticking over ?
And also the smoke problem when I first had the car............plumes of smoke when lifting off that gradually cleared over a few weeks. |
18th December 2006, 19:35 | #9 | |
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Quote:
Another potential cause of smoke from the diesels is a catalyst storage problem. We had this issue initially on L series in Rover 600. What happens is that during lots of light throttle, steady state driving, the oil being burnt by the engine (due to entrainment in the breather gases) is not fully burnt off, and ends up deposited in the exhaust catalyst. During steady state driving, the cat temperature remains relatively low, and the unburnt oil in the cat steadily builds up. After an extended period of this type of driving, when the engine suddenly sees a full load situation (for example full throttle overtaking or driving up a steep hill), the exhaust temperature, and therefore cat temperature spikes upwards, and lights the cat up, which instantly burns off the oil build up in the cat, and leads to great clouds of blue/grey/black smoke! This could also have been part of your problem! It was a significant problem on R600 and is very difficult to stop. I will have to try and dig out some of my old M47 files from the back of the shed - until recently (after joining the club) I had not even thought about M47 for about 5 years! Andy
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18th December 2006, 20:02 | #10 |
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M47 Man where were you a year ago, When everywhere I went it was new engine new turbo minimum of £2000 plus labour!!!!!!
I was a apprentice trained mechanic for ten years and it just didn't seem likely after 80'000 for it to be valve seals, but after just buying the car I was in a bit of a panic!! I knew all along it wasn't an engine failure as such, but at first it seemed like a blown turbo but there wasn't really a pattern. Now I get a puff of blueish white smoke every 100th start nothing much to see at all. When I first got the car if the car sat idleing for a couple of minutes and you drove off the first time you lifted off really couldn't see the car behind, I changed the Air filter as it was solid, this helped obviously, but seemed to go worse after I changed the oil and put the oil in too quick (I squeezed the bottle ) I presumed this filled the rocker area up, after another oil change a couple of months later (just to get things cleaned up, see if more crud came out) smoke was nearly down to nothing, at the moment it hasn't belched for at least a month Last edited by Paranoid Carlos; 18th December 2006 at 20:05.. |
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