Black Smoke

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natas said:
Had the same problem with my 300tdi when I first got her.

Turns out it was a vacuum line come loose going to the turbo.
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Just found this pipe was loose, at bottom of turbo. it was a little oily but not really much. the clip was not on right, pipe just slid off by hand, moved the clip up, cleaned it and it is tight on now.
Not sure what pipe it is but it leads from the pump straight to the turbo.
 

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If it has been run on biodiesel where has this come from? I know a farmer who makes his own and he has destroyed at least 5 cars with his noxious rubbish fuel! This includes a 200TDi. If it isn't made properly it can knacker engines in no time at all.
 
border said:
Just found this pipe was loose, at bottom of turbo. it was a little oily but not really much. the clip was not on right, pipe just slid off by hand, moved the clip up, cleaned it and it is tight on now.
Not sure what pipe it is but it leads from the pump straight to the turbo.
Click to expand...

I doubt that pipe pipe is the cause of your problem but let's see how it goes now that you've sorted it out.
What that pipe does is to transfer boost to the fuel pump to signal it to increase fuelling when boost pressures increase.
If anything at all, with that pipe off or leaking, you should have a reverse of the symptoms you're having now; at full throttle, you would hear the turbo happily singing its heart out but you wouldn't be getting the expected power output and almost certainly no smoke.
 
Found the fuel screw, have not had a go at it yet seems akward to get too.
But found this pipe here has been cut at some piont and joined together, or should it be like this??.
Where the metal bit goes in was not very tight so loosened both bits off and cleaned them then put them back on tight. Would this be causing any problems??
 

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border said:
Found the fuel screw, have not had a go at it yet seems akward to get too.
But found this pipe here has been cut at some piont and joined together, or should it be like this??.
Where the metal bit goes in was not very tight so loosened both bits off and cleaned them then put them back on tight. Would this be causing any problems??
Click to expand...

Fuel delivery line... I doubt it.

If it wasn't leaking before you found out it was a bit loose, then you certainly have no problems with it.
Too loose and you would have had diesel sprayed everywhere on account of the fuel pressure being delivered by the lift pump.
 
ifloochies said:
I doubt that pipe pipe is the cause of your problem but let's see how it goes now that you've sorted it out.
What that pipe does is to transfer boost to the fuel pump to signal it to increase fuelling when boost pressures increase.
If anything at all, with that pipe off or leaking, you should have a reverse of the symptoms you're having now; at full throttle, you would hear the turbo happily singing its heart out but you wouldn't be getting the expected power output and almost certainly no smoke.
Click to expand...

+1 on this - exactly the symptoms I had when my vacuum pipe split. Great description. Something else I also noticed was that early in the boost, pickup is quite good (presumably there is plenty of fuel at this point). As the revs increase, the boost literally drops to nothing and the swearing begins. I was confident that the problem would be lack of fuel or boost leak.
 
Totally Committed this weekend as I have a bit to do for my FiL tomorrow, and am at an event at Gloucester Lodge Farm all day Sunday.

Next week I am in Hebden Bridge until Friday, so possibly next weekend?
 
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